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# List of Kinds of Property

The kinds-of-property listed are used in active and in inactive NPU codes.

The list contains only a portion of the kinds-of-property described in the “Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences (IUPAC Provisional Recommendations, Silver Book revised).”

The title is the preferred term for the given Kind-of-property.

**Kind-of-property**

## Kind-of-property (k-o-p)

Kind-of-property (k-o-p) Abbreviation k-o-p Definition in words Any kind-of-property of component B in system 1 Systematic terms Kind-of-property of component B in system 1 Result type Any result type Special rule(s) in the NPU syntax “Procedure” is stated in the...

**Kind-of-quantity**

## Amount-of-substance (am.s.)

Amount-of-substance (am.s.) Synonym Chemical amount Abbreviation Am.s., substance (subst.) Definition in words Number of elementary entities (component B) divided by Avogadro constant in system 1. Note 1: Avogadro constant is the number of entities in one mole Note 2:...

## Arbitrary activity (arb.act.)

Arbitrary activity (arb.act.) Abbreviation Arb.act. Definition in words Arbitrary activity of component B in system 1 (Ratio scale) Arbitrary activity of component B in system 1 compared with arbitrary activity of component B in reference system (Ordinal scale) Note...

## Arbitrary amount-of-substance (arb.am.s.)

Arbitrary amount-of-substance (arb.am.s.) Abbreviation Arb.am.s. Definition in words Arbitrary amount-of-substance of component B in system 1 compared with arbitrary amount-of-substance of component B in a reference system. Note: The reference system is defined by the...

## Arbitrary catalytic-activity (arb.cat.act.)

Arbitrary catalytic-activity (arb.cat.act.) Abbreviation Arb.cat.act. Definition in words Arbitrary catalytic-activity of component B in system 1 (Ratio scale) Arbitrary catalytic-activity of component B in system 1 compared with arbitrary catalytic-activity of...

## Arbitrary catalytic-activity concentration (arb.cat.c.)

Arbitrary catalytic-activity concentration (arb.cat.c.) Abbreviation Arb.cat.c. Definition in words Arbitrary catalytic-activity of component B divided by the volume of system 1 Definition by equation Note 1: Component B is a catalytic component. Note 2: kprocedure=an...

## Arbitrary concentration (arb.c.)

Arbitrary concentration (arb.c.) Abbreviation Arb.c. Definition in words Concentration of component B in system 1 compared with concentration of component B in a reference system Note: The reference system is defined by the laboratory Result type Ordinal scale Value...

## Arbitrary conductivity (arb.conductivity)

Arbitrary conductivity (arb.conductivity) Abbreviation Arb.conductivity Definition in words Arbitrary conductivity of component B in system 1 Note: Electrical conductivity is the reciprocal of resistivity (Ref 1) Definition by equation Note 1: kprocedure is a constant...

## Arbitrary content (arb.cont.)

Arbitrary content (arb.cont.) Abbreviation Arb.cont. Definition in words Arbitrary content of component B in system 1 compared with arbitrary content of component B in a reference system. Note 1: The reference system is defined by the laboratory. Note 2: Content...

## Arbitrary entitic amount-of-substance (arb.entitic am.s.)

Arbitrary entitic amount-of-substance (arb.entitic am.s.) Abbreviation Arb.entitic am.s Definition in words Arbitrary entitic amount-of-substance of component B in system 1 compared with arbitrary entitic amount-of-substance of component B in a reference system Note:...

## Arbitrary entitic number (arb.entitic num.)

Arbitrary entitic number (arb.entitic num.) Abbreviation Arb.entitic num. Definition in words Arbitrary entitic number of component B in system 1 (Arbitrary number of component B divided by number of system 1) (Ratio scale) Arbitrary entitic number of component B in...

## Arbitrary fraction (arb.fr.)

Arbitrary fraction (arb.fr.) Abbreviation Arb.fr. Definition in words Fraction of component B in system 1 compared with fraction of component B in a reference system. Note: The reference system is defined by the laboratory. Result type Ordinal scale Value set is...

## Arbitrary length (arb.length)

Arbitrary length (arb.length) Abbreviation Arb.length Definition in words Arbitrary length of component B in system 1 Definition by equation Note: kprocedure is a constant defined by the measurement procedure (there is an approximately proportionality to a...

## Arbitrary logarithmic number concentration (arb.log.num.c)

Arbitrary logarithmic number concentration (arb.log.num.c) Abbreviation Arb.log.num.c Definition in words Logarithm of the arbitrary number concentration of component B in system 1 Definition by equation Result type Ratio scale Value sets are positive numerical...

## Arbitrary mass concentration (arb.mass c.)

Arbitrary mass concentration (arb.mass c.) Abbreviation Arb.mass c. Definition in words Arbitrary mass concentration of component B in system 1 Definition by equation Note 1: kprocedure is a constant defined by the measurement procedure (there is an approximately...

## Arbitrary number (arb.num.)

Arbitrary number (arb.num.) Abbreviation Arb.num. Definition in words Arbitrary number of component B in system 1 (Ratio scale, see Definition by equation). Arbitrary number of component B in system 1 compared with arbitrary number of component B in reference system...

## Arbitrary number concentration (arb.num.c.)

Arbitrary number concentration (arb.num.c.) Arbitrary number concentration Abbreviation Arb.num.c. Definition in words Arbitrary number concentration of component B in system 1 (Ratio scale) Arbitrary number concentration of component B in system 1 compared with...

## Arbitrary number fraction (arb.num.fr.)

Arbitrary number fraction (arb.num.fr.) Abbreviation Arb.num.fr. Definition in words Arbitrary number fraction of component B in system 1 (ratio scale) Difference between arbitrary number fraction of component B in system 1 in condition 1 and arbitrary number fraction...

## Arbitrary number ratio

Arbitrary number ratio Definition in words Number ratio of component B in system 1 compared with number ratio of component B in a reference system Note: The reference system is defined by the laboratory Result type Ordinal scale Value set is ranked accoding to...

## Arbitrary pressure (arb.pr.)

Arbitrary pressure (arb.pr.) Synonym Chemical amount Abbreviation Arb.pr. Definition in words Arbitrary pressure of component B in system 1 Definition by equation Result type Ratio scale Value sets are positive numerical values Numerical values from 0-∞ Algebraic...

## Arbitrary rate (arb.rate)

Arbitrary rate (arb.rate) Abbreviation Arb.rate Definition in words Arbitrary rate of component B in system 1 compared with arbitrary rate of component B in a reference system Note 1: The reference system is defined by the laboratory. Note 2: Content refers to mass of...

## Arbitrary reciproc threshold mass concentration (arb.recip.threshold mass c.)

Arbitrary reciproc threshold mass concentration (arb.recip.threshold mass c.) Abbreviation Arb.recip.threshold mass c. Definition in words Volume of system 1 divided by arbitrary threshold mass of component B Definition by equation Note: kprocedure is a constant...

## Arbitrary shear stress (arb.shear stress)

Arbitrary shear stress (arb.shear stress) Abbreviation Arb.shear stress Definition in words Arbitrary shear stress of component B in system 1 Note: Shear stress is "Force acting tangentially to a surface divided by the area of the surface" IUPAC Gold Book Definition...

## Arbitrary substance concentration (arb.subst.c.)

Arbitrary substance concentration (arb.subst.c.) Abbreviation Arb.subst.c. Definition in words Arbitrary amount-of-substance of component B divided by volume of system 1 Definition by equation Note: kprocedure is a constant defined by the measurement procedure (there...

## Arbitrary substance concentration increment (arb.subst.c.incr.)

Arbitrary substance concentration increment (arb.subst.c.incr.) Abbreviation Arb.subst.c.incr. Definition in words Arbitrary substance concentration of component B in conditioned system 1 minus arbitrary substance concentration of component B in conditioned system 0...

## Arbitrary substance content (arb.subst.cont.)

Arbitrary substance content (arb.subst.cont.) Abbreviation Arb.subst.cont. Definition in words Arbitrary amount-of-substance of component B divided by mass of system 1 Definition by equation Note: kprocedure is a constant defined by the measurement procedure (there is...

## Arbitrary substance rate (arb.sub.rate)

Arbitrary substance rate (arb.sub.rate) Abbreviation Arb.sub.rate Definition in words Change of arbitrary amount-of-substance of component B divided by the time elapsed Definition by equation Note: kprocedure is a constant defined by the measurement procedure (there...

## Arbitrary substance ratio (arb.subst.ratio)

Arbitrary substance ratio (arb.subst.ratio) Abbreviation Arb.subst.ratio Definition in words Arbitrary substance ratio of component B in system 1 Definition by equation Note 1: Component B is the quotient of component F and component G Note 2: Component F ≠ Component...

## Arbitrary threshold concentration (arb.threshold c.)

Arbitrary threshold concentration (arb.threshold c.) Abbreviation Arb.threshold c. Definition in words Arbitrary threshold concentration of component B in system 1 compared with arbitrary threshold concentration of component B in a reference system Note 1:...

## Arbitrary time (arb.time)

Arbitrary time (arb.time) Abbreviation Arb.time Definition in words Arbitrary time of component B in system 1 compared with arbitrary time of component B in a reference system. Note 1: Component B can be a reaction or proces Note 2: The reference system is defined by...

## Arbitrary viscosity (arb.viscosity)

Arbitrary viscosity (arb.viscosity) Abbreviation Arb.viscosity Definition in words Arbitrary viscosity of component B in system 1 compared with arbitrary viscosity of component B in a reference system Note: The reference system is defined by the laboratory Result type...

## Area

Area Synonym Area of plane, surface or interface Definition in words Integral product of length, x, and breadth (width), y, of component B in system 1 Definition by equation Systematic terms Area of component B in system 1 Result type Ratio scale Value sets are...

## Areic mass

Areic mass Definition in words Mass of component B divided by area of system 1 Definition by equation Systematic terms Areic mass of component B in system 1 Result type Ratio scale Value sets are positive numerical values Algebraic operations are allowed (a=nb; a≠nb)...

## Areic mass rate

Areic mass rate Definition in words Change of mass of component B divided by the elapsed time and the area of system 1 Definition by equation Systematic terms Areic mass rate of component B in system 1 Result type Ratio scale Value sets are positive numerical values...

## Areic number

Areic number Definition in words Number of component B divided by area of system 1 Definition by equation Systematic terms Areic number of component B in system 1 Result type Ratio scale Value sets are positive numerical values Algebraic operations are allowed (a=nb;...

## Attenuance

Attenuance Definition in words Negative decadig logarithm of internal transmittance of a parallel beam of a rediation through that medium (system 1) Definition by equation Systematic terms Attenuance of system 1 Result type Logarithmic scale Value sets are numerical...

## Catalytic-activity (cat.act.)

Catalytic-activity (cat.act.) Synonym Enzyme activity, enzymatic activity, catalytic amount Abbreviation Cat.act. Definition in words Difference of amount-of-substance of component D at two points of time divided by the difference of elapsed time Definition by...

## Catalytic-activity coefficient (cat.coefficient)

Catalytic-activity coefficient (cat.coefficient) Abbreviation Cat.coefficient Definition in words Catalytic-activity of component F divided by coefficient of component G in system 1 Note 1: Coefficient can be a kind-of-quantity that is not e.g. volume, mass. Note 2:...

## Catalytic-activity concentration (cat.c.)

Catalytic-activity concentration (cat.c.) Synonym Catalytic concentration Abbreviation Cat.c. Definition in words Catalytic-activity of component B divided by volume of system 1 Note: Component B is a catalytic component Definition by equation Systematic terms...

## Catalytic-activity content (cat.cont.)

Catalytic-activity content (cat.cont.) Synonym Catalytic content Abbreviation Cat.cont. Definition in words Catalytic-activity of component B divided by mass of system 1 Note: Component B is a catalytic component. Definition by equation Systematic terms...

## Catalytic-activity fraction (cat.fr.)

Catalytic-activity fraction (cat.fr.) Synonym Chemical amount Abbreviation Cat.fr. Definition in words Catalytic-activity of component B divided by catalytic-activity of system 1 Note 1: Component B is a catalytic component Note 2: Component B can be an isoenzynes of...

## Catalytic-activity rate (cat.rate)

Catalytic-activity rate (cat.rate) Abbreviation Cat.rate Definition in words Change in catalytic-activity of component B divided by the elapsed time Note: Component B is a catalytic component. Definition by equation Systematic terms Catalytic-activity rate of...

## Catalytic-activity ratio (cat.ratio)

Catalytic-activity ratio (cat.ratio) Synonym Catalytic ratio Abbreviation Cat.ratio Definition in words Catalytic-activity of component F divided by catalytic-activity of component G in system 1 Note 1: Component B is the quotient of component F and component G. Note...

## Celsius temperature (temp.)

Celsius temperature (temp.) Abbreviation Temp. Definition in words Thermodynamic temperature minus 273.15 K Note: Thermodynamic temperature (Kelvin temperature, absolute temperature) is a base SI quantity Definition by equation Systematic terms Celsius temperature of...

## Celsius temperature increment (temp.incr.)

Celsius temperature increment (temp.incr.) Abbreviation Temp.incr. Definition in words Celsius temperature of system 2 minus Celsius temperature of a system 1 Definition by equation Systematic terms Celsius temperature increment of system 1 Result type Differential...

## Compatibility

Compatibility Definition in words Tolerance toward non-self entities Note: "Tolerance" is the ability not to initiate a reaction Systematic terms Compatibility of component B in system 1 Result type Ordinal scale Value set is ranked accoding to magnitude The value set...

## Concentration (conc.)

Concentration (conc.) Abbreviation Conc. Definition in words Kind-of-quantity of component B divided by volume of system 1 Note: "Concentration" indicates that the system is a liquid system Systematic terms Concentration of component B in system 1 Result type Ordinal...

## Diameter (diam.)

Diameter (diam.) Abbreviation Diam. Definition in words Two times radius of component B Definition by equation Systematic terms Diameter of component B in system 1 Result type Ratio scale Value sets are positive numerical values Algebraic operations are allowed (a=nb;...

## Distribution width

Distribution width Definition in words Unspecific volume of component B in system 1 Note: Distrution width refers to statistical parameters of volume, e.g. coefficient variation or standard deviation of volume of a given component B (e.g. coefficient variation of...

## Duration

Duration Synonym Time, time elapsed, age, life expectancy, time difference Definition in words A specific moment of time minus another specific moment of time Note 1: Time is a SI base kind-of-quantity Note 2: Component B may be a chemical, biological or physiological...

## Dynamic viscosity (dyn.visc.)

Dynamic viscosity (dyn.visc.) Synonym Coefficient of internal friction Abbreviation Dyn.visc. Definition in words Shear stress in the x,z plane in a fluid divided by velocity gradient perpendicular to the plane of shear (Reference 1) Note 1: Shear stress is the "force...

## Entitic amount-of-substance (entitic am.s.)

Entitic amount-of-substance (entitic am.s.) Abbreviation Entitic am.s. Definition in words Amount-of-substance of component B divided by the number of entities Alternative expression: Amount-of-sustance of component B per entity Note: Entity is a particle, molecule or...

## Entitic area

Entitic area Definition in words The area of component divided by the number of component B Alternative expression: Average area of component B Definition by equation Systematic terms Entitic area of component B in system 1 Result type Ratio scale Value sets are...

## Entitic catalytic activity (entitic cat.act.)

Entitic catalytic activity (entitic cat.act.) Abbreviation Entitic cat.act. Definition in words Catalytic-activity of component B divided by number of system 1 in system 2 Alternative expression: Catalytic-activity of component B per system 1 in system 2 Note 1:...

## Entitic diameter

Entitic diameter Abbreviation Entitic am.s. Definition in words Diameter of component B divided by number of component B Alternative: Average diameter of component B Definition by equation Systematic terms Entitic diameter of component B in system 1 Result type Ratio...

## Entitic mass

Entitic mass Definition in words Mass of component B divided by number of entities (component B or system 1) in a system Alternative: Average mass of component B in a system or mass of component per system 1 in system 2 Definition by equation Systematic terms...

## Entitic number (entitic num.)

Entitic number (entitic num.) Synonym Number per entity Abbreviation Entitic num. Definition in words Number of component B divided by number of entities (system 1) in system 2 Alternative expressions: (Average) Number of component B per entity (system 1) in system 2...

## Entitic volume (entitic vol.)

Entitic volume (entitic vol.) Abbreviation Entitic vol. Definition in words Volume of component B divided by number of entities (component B) in system 1 Alternative: Average volume of component B Definition by equation Systematic terms Entitic volume of component B...

## Entitic volume difference (entitic vol.diff.)

Entitic volume difference (entitic vol.diff.) Abbreviation Entitic vol.diff. Definition in words Difference of entitic volume of component B at different conditions in system 1 Definition by equation Systematic terms Entitic volume difference of component B in system...

## Expiry

Expiry Definition in words The end of the period for which something is valid. Systematic terms Expiry of component B in system 1 Result type Ordinal scale Value set is ranked accoding to magnitude The value set and the limit of the value set are defined by the...

## Frequency

Frequency Synonym Number rate of regular event Definition in words Number of regular events divided by time elapsed Alternative expression: Number of periodic phenomenon per time Note: Regular event is an event that re-occurs after a time Definition by equation...

## Gas tension (tension)

Gas tension (tension) Abbreviation Tension Definition in words Partial pressure of a component in a gas phase in equilibrium with the same component dissolved in a liquid phase Definition by equation Systematic terms Gas tension of component B in system 1...

## Half-life

Half-life Synonyms Half-time (T½) Definition in words Time take for the amount (e.g. number, volume, mass, amount-of-substance) to reach the arithmetic mean of its initial and final equilibrium value, assuming a first-order process. Definition by equation k= rate...

## Height

Height Definition in words Length of component B in system 1 Note: Length on z-axis in Cartsian coordinate system Definition by equation Systematic terms Height of component B in system 1 Result type Ratio scale Value sets are positive numerical values Algebraic...

## Impedance increment (impedance incr.)

Impedance increment (impedance incr.) Abbreviation Impedance incr. Definition in words Increase of impedance Note: Impedance(complex impedance) = R + jX, where R= electric resistance, j=aeric electrical current and X= reactance (ref 1) Definition by equation...

## Kinematic viscosity (kin.visc.)

Kinematic viscosity (kin.visc.) Abbreviation Kin.visc. Definition in words Dynamic viscosity of a fluid divided by its volumic mass (Reference 1) Note: Volumic mass (mass density) is mass of system divided by its volume Definition by equation Systematic terms...

## Length

Length Definition in words Distance between two points 1 and 2 of component B in system 1 Note: Length is a SI base kind-of-quantity Definition by equation Systematic terms Length of component B in system 1 Result type Ratio scale Value sets are positive numerical...

## Length increment (length incr.)

Length increment (length incr.) Abbreviation Length incr. Definition in words Increase of length of component B in system 1 Definition by equation Systematic terms Length increment of component B in system 1 Result type Ratio scale Value sets are positive numerical...

## Life span

Life span Synonym Time, duration, time elapsed, age, life expectancy, time difference Definition in words A specific moment of time minus another specific moment of time Note 1: Time is a SI base kind-of-quantity Note 2: Component B may be a chemical, biological or...

## Mass

Mass Definition in words The coefficient of proportionality between the force applied to a body and its acceleration Note: Mass is a base SI quantity Definition by equation Systematic terms Mass of component B in system 1 Result type Ratio scale Value sets are...

## Mass coefficient

Mass coefficient Definition in words Mass of component B divided by coefficient of component B in system 1 Mass of component F divided by coefficient of component G in system 1 Note 1: Coefficient can be a kind-of-quantity that is not volume or mass For the second...

## Mass concentration (mass c.)

Mass concentration (mass c.) Abbreviation Mass c. Definition in words The mass of component B divided by volume of system 1 Definition by equation Systematic terms Mass concentration of component B in system 1 Result type Ratio scale Value sets are positive numerical...

## Mass fraction (mass fr.)

Mass fraction (mass fr.) Abbreviation Mass fr. Definition in words The mass of component B divided by the mass of system 1 Definition by equation Systematic terms Mass fraction of component B in system 1 Result type Ratio scale Value sets are positive numerical values...

## Mass increment (mass incr.)

Mass increment (mass incr.) Abbreviation Mass incr. Definition in words Increase of mass of component B in system 1 Definition by equation Systematic terms Mass increment of component B in system 1 Result type Ratio scale Value sets are positive numerical values...

## Mass rate

Mass rate Synonyms Mean mass rate, mass flow rate, mass velocity Abbreviation Mass c. Definition in words Change of mass of component B divided by time elapsed in system 1 Definition by equation Systematic terms Mass rate of component B in system 1 Result type Ratio...

## Mass rate ratio

Mass rate ratio Definition in words The mass rate of component F divided by mass rate of component G in system 1 Note 1: Component F ≠ Component G (≠ = "not equal to") Note 2: Component F ∉ Component G (∉ = "is not an element of") Note 3: The quotient of mass rate of...

## Mass ratio

Mass ratio Definition in words The mass of component F divided by mass of component G in system 1 Note 1: Component F ≠ Component G (≠ = "not equal to") Note 2: Component F ∉ Component G (∉ = "is not an element of") Note 3: The quotient of mass of component F and mass...

## Molality (molal.)

Molality (molal.) Abbreviation Molal. Definition in words Amount-of-substance of component B (solute) divided by mass of system 1 (solvent) Note: Molality differs from substance content that refers to mass of a system (mixture), whereas for molality it refers only to...

## Motility

Motility Definition in words Ability of an organism to move independently compared to the movement ability of a reference organism Systematic terms Motility of component B in system 1 Result type Ordinal scale Value set is ranked accoding to magnitude The value set...

## Number concentration (num.c.)

Number concentration (num.c.) Abbreviation Num.c. Definition in words The number of component B divided by volume of system 1 Definition by equation Systematic terms Number concentration of component B in system 1 Result type Ratio scale Value sets are positive...

## Number content (num.cont.)

Number content (num.cont.) Abbreviation Num.cont. Definition in words The number of component B divided by mass of system 1 Definition by equation Systematic terms Number content of component B in system 1 Result type Ratio scale Value sets are positive numerical...

## Number fraction (num.fr.)

Number fraction (num.fr.) Abbreviation Num.fr. Definition in words The number of component B divided by number of system 1 Definition by equation Systematic terms Number fraction of component B in system 1 Result type Ratio scale Value sets are positive numerical...

## Number of doses

Number of doses Definition in words Number of doses of component B in system 1 Note 1: Doses are kinds-of-quantity, e.g. amount-of-substance, mass, etc. Definition by equation Systematic terms Number of doses of component B in system 1 Result type Ratio scale Value...

## Number of entities (num.)

Number of entities (num.) Synonym Absolute frequency, number of particles, number of molecules Abbreviation Num. Definition in words Number of entities (component B) in system 1 Note 1: Number of entities is not a SI base kind-of-quantity. In clinical laboratory, it...

## Number ratio (num.ratio)

Number ratio (num.ratio) Synonym Chemical amount Abbreviation Num.ratio Definition in words Number of component F divided by number of component G in system 1 Note 1: Component B is the quotient of component F and component G. Note 2: Component F ≠ Component G...

## Partial pressure (part.pr.)

Partial pressure (part.pr.) Synonym Vapour pressure Abbreviation Part.pr. Definition in words Substance fraction of component B times pressure of gaseous system 1 Definition by equation Systematic terms Partial pressure of component B in system 1 Result type Ratio...

## Pattern of crystallization

Pattern of crystallization Definition in words Structure of component B after formation of crystals compared to structure of a reference system after formation of crystals Systematic terms Pattern of crystallization of component B in system 1 Result type Ordinal scale...

## pH

pH Synonym Hydrogen ion exponent Abbreviation pH Definition in words Negative decadic logarithm of the relative molal activity of hydrogen ion Definition by equation Systematic terms pH of hydrogen ion in system 1 Result type Logarithmic scale Value sets are numerical...

## Presence

Presence Definition in words Something that is existing or occuring Systematic terms Presence of component B in system 1 Result type Ordinal scale Value set is ranked accoding to magnitude The value set and the limit of the value set are defined by the laboratory The...

## Pressure (pr.)

Pressure (pr.) Synonym Absolute pressure, total pressure (of gas mixture), volumic hydraulic energy, areic force Abbreviation Pr. Definition in words Force, as a scalar quantity, exerted by a fluid normal to a plane divided by the area of that plane Definition by...

## Radioactivity (radioact.)

Radioactivity (radioact.) Abbreviation Radioact. Definition in words Number of nuclear decays occurring in a given quantity of material in a small time interval, divided by the duration of that time interval (ref 3) The property of certain nuclides showing radioactive...

## Reciprocal relative time (recip.rel.time)

Reciprocal relative time (recip.rel.time) Abbreviation Recip.rel.time Definition in words Time of component B in system 2 divided by time of component in system 1 Note 1: System 1 is unrelated to system 2 Note 2: System 2 can be a reference system (also called "norm")...

## Relative amount-of-substance (rel.ams.)

Relative amount-of-substance (rel.ams.) Abbreviation Rel.ams. Definition in words Amount-of-substance of component B in system 1 divided by amount-of-substance of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic terms...

## Relative distribution width

Relative distribution width Definition in words Distribution width of component B in system 1 divided by distribution width of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic terms Relative distribution width of...

## Relative entitic number (rel.entitic num.)

Relative entitic number (rel.entitic num.) Abbreviation Rel.entitic num. Definition in words Entitic number of component B in system 1 divided by entitic number of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic...

## Relative mass concentration (rel.mass c.)

Relative mass concentration (rel.mass c.) Abbreviation Rel.mass c. Definition in words Mass concentration of component B in system 1 divided by mass concentration of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic...

## Relative mass ratio (rel.mass ratio)

Relative mass ratio (rel.mass ratio) Abbreviation Rel.mass ratio Definition in words Mass ratio of component B in system 1 divided by mass ratio of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic terms Relative mass...

## Relative number concentration (rel.num.c.)

Relative number concentration (rel.num.c.) Abbreviation Rel.num.c. Definition in words Number concentration of component B in system 1 divided by number concentration of component B in system 2 Note: System 1 is not related to system 2 Definition by equation...

## Relative number ratio (rel.num.ratio)

Relative number ratio (rel.num.ratio) Abbreviation Rel.num.ratio Definition in words Number ratio of component B in system 1 divided by number ratio of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic terms...

## Relative substance concentration (rel.subst.c.)

Relative substance concentration (rel.subst.c.) Abbreviation Rel.subst.c. Definition in words Substance concentration of component B in system 1 divided by substance concentration of component B in system 2 Note: System 1 is not related to system 2 Definition by...

## Relative substance fraction (rel.subst.fr.)

Relative substance fraction (rel.subst.fr.) Abbreviation Rel.subst.fr. Definition in words Substance fraction of component B in system 1 divided by substance fraction of component B in system 2 Note: System 1 is not related to system 2 Definition by equation...

## Relative substance ratio (rel.subst.ratio)

Relative substance ratio (rel.subst.ratio) Abbreviation Rel.subst.ratio Definition in words Substance ratio of component B in system 1 divided by substance ratio of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic...

## Relative time (rel.time)

Relative time (rel.time) Abbreviation Rel.time Definition in words Time of component B in system 1 divided by time of component B in system 2 Note: System 1 is not related to system 2 Definition by equation Systematic terms Relative time of component B in system 1...

## Relative time ratio (rel. time ratio)

Relative time ratio (rel. time ratio) Abbreviation Rel. time ratio Definition in words Time ratio of component B in system 1 divided by time ratio of component B in system 2 Note 1: System 1 is not related to system 2 Note 2: Component F ≠ Component G (≠ = "not equal...

## Relative viscosity (rel.visc.)

Relative viscosity (rel.visc.) Synonyms Viscosity ratio Abbreviation Rel.visc. Definition in words Dynamic viscosity of component B in system 1 divided by dynamic viscosity of component B in system 2 Note: System 1 is not related to system 2 Definition by equation...

## Relative volumic mass (rel.volumic mass)

Relative volumic mass (rel.volumic mass) Synonyms Relative mass density Abbreviation Rel.volumic mass Definition in words Volumic mass of system 1 divided by volumic mass of system 2 Note 1: System 1 is not related to system 2 Note 2: Volumic mass (mass density) is...

## Saturation (sat.)

Saturation (sat.) Synonym Saturation fraction Abbreviation Sat. Definition in words Amount-of-substance of component B (solute) in a solution divided by the amount-of-substance of the component when it is saturating the system at constant temperature and pressure...

## Substance concentration (subst.c.)

Substance concentration (subst.c.) Synonyms Amount-of-substance concentration, molar concentration Abbreviation Subst.c. Definition in words Amount-of-substance of component B divided by volume of system 1 Definition by equation Systematic terms Substance...

## Substance concentration increment (subst.c.incr.)

Substance concentration increment (subst.c.incr.) Abbreviation Subst.c.incr. Definition in words Increase of substance concentration of component B in system 1 Definition by equation Systematic terms Substance concentration increment of component B in system 1 Result...

## Substance content (subst.cont.)

Substance content (subst.cont.) Abbreviation Subst.cont. Definition in words Amount-of-substance of component B divided by mass of system 1 Definition by equation Systematic terms Substance content of component B in system 1 Result type Ratio scale Value sets are...

## Substance content rate (subst.cont.rate)

Substance content rate (subst.cont.rate) Synonym Absolute pressure, total pressure (of gas mixture), volumic hydraulic energy, areic force Abbreviation Subst.cont.rate Definition in words Change of substance content of component B divided by time elapsed Definition by...

## Substance fraction (subst.fr.)

Substance fraction (subst.fr.) Substance fraction Synonyms Mole fraction, amount-of-substance fraction Abbreviation Subst.fr. Definition in words Amount-of-substance of component B divided by amount-of-substance of system 1 Definition by equation Systematic terms...

## Substance rate (subst.rate)

Substance rate (subst.rate) Synonyms Substance flow rate Abbreviation Subst.rate Definition in words Change of amount-of-substance of component B divided by the time elapsed Definition by equation Systematic terms Substance rate of component B in system 1 Result type...

## Substance rate ratio (subst.rate ratio)

Substance rate ratio (subst.rate ratio) Abbreviation subst.rate ratio Definition in words Substance rate of component F divided by substance rate of component G in system 1 Note 1: Component F ≠ Component G (≠ = "not equal to") Note 2: Component F ∉ Component G (∉ =...

## Substance ratio (subst.ratio)

Substance ratio (subst.ratio) Synonyms Mole ratio, amount-of-substance ratio Abbreviation Subst.ratio Definition in words The amount-of-substance of component F divided by amount-of-substance of component G in system 1 Note 1: Component F ≠ Component G (≠ = "not equal...

## Substance ratio increment (subst.ratio incr.)

Substance ratio increment (subst.ratio incr.) Abbreviation Subst.ratio incr. Definition in words Increase of substance ratio of component B in system 1 Definition by equation Systematic terms Substance ratio increment of component B in system 1 Result type Ratio scale...

## Susceptibility (suscept.)

Susceptibility (suscept.) Definition in words A lower threshold kind-of-quantity value of component B compared with a threshold kind-of-quantity value of component B in a reference system Note 1: Component B can be an organism or proces Note 2: Threshold...

## Threshold mass concentration (threshold mass c.)

Threshold mass concentration (threshold mass c.) Abbreviation Threshold mass c. Definition in words Lowest value of mass concentration of component B to stimulate a specific reaction in system 1 Note 1: "Threshold is a modifier indicating that the kind-of-property is...

## Threshold substance concentration (threshold subst.c.)

Threshold substance concentration (threshold subst.c.) Abbreviation Threshold subst.c. Definition in words Lowest value of substance concentration of component B in system 1 to stimulate a specific reaction Note 1: "Threshold is a modifier indicating that the...

## Time

Time Synonym Duration, time elapsed, age, life expectancy, time difference Definition in words A specific moment of time minus another specific moment of time Note 1: Time is a SI base kind-of-quantity Note 2: Component B may be a chemical, biological or physiological...

## Time interval (time int.)

Time interval (time int.) Synonym Time, duration, time elapsed, age, life expectancy, time difference Abbreviation Time int. Definition in words A specific moment of time minus another specific moment of time Note 1: Component B may be a chemical, biological or...

## Velocity (vel.)

Velocity (vel.) Synonym Length rate vector Abbreviation Vel. Definition in words Change in position divided by time of travel Definition by equation Note: Position at the x-, y- and z-axis Result type Ratio scale Value sets are positive numerical values (a=nb; a≠nb)...

## Volume (vol.)

Volume (vol.) Abbreviation Vol. Definition in words Integral product of length, x, breadth, y and height, z Definition by equation Result type Ratio scale Value sets are positive numerical values (a=nb; a≠nb) Algebraic operations are allowed Numerical values from 0-∞...

## Volume content (volume cont.)

Volume content (volume cont.) Abbreviation Volume cont. Definition in words Volume of component B divided by mass of system 1 Definition by equation Result type Ratio scale Value sets are positive numerical values (a=nb; a≠nb) Algebraic operations are allowed...

## Volume fraction (vol.fr.)

Volume fraction (vol.fr.) Abbreviation Vol.fr. Definition in words The volume of component B divided by the volume of system 1 Definition by equation Result type Ratio scale Value sets are positive numerical values (a=nb; a≠nb) Algebraic operations are allowed...

## Volume rate (vol.rate)

Volume rate (vol.rate) Synonym Volume flow rate, mean volume rate, volume rate of flow Abbreviation Vol.rate Definition in words Change of volume of component B divided by the difference of time in system 1 Definition by equation Result type Ratio scale Value sets are...

## Volume rate ratio (vol.rate ratio)

Volume rate ratio (vol.rate ratio) Abbreviation Vol.rate ratio Definition in words Volume rate ratio of component B in system 1 (The volume rate of component F divided by volume of component G in system 1) Definition by equation Note 1: Component B is the quotient of...

## Volumic energy

Volumic energy Synonym Energy density Definition in words Mean energy in a system 1 divided by the volume of system 1 Definition by equation Note: Energy is E=mc2 Systematic terms Volumic energy of component B in system 1 Result type Ratio scale Value sets are...

**Narrative kind-of-property**

## Copy number variation (cnv)

Copy number variation (cnv) Abbreviation Cnv Definition in words Kind-of-property designating structural variation in the number of copies of one or more specific sequences from a reference sequence of the same kind.(Ref 1) Note: Used to describe position changes...

## Morphology

Morphology Definition in words Structure and shape of organisms Systematic terms Morphology of component B in system 1 Result type Narrative description Value sets are structural sentences with two or more values Algebraic operations are not allowed Possible...

## Sequence variation (seq.var.)

Sequence variation (seq.var.) Abbreviation Seq.var. Definition in words Kind-of property designating variation consisting in deviations from a specified part of a reference sequence of the same kind. (Ref 1.) Value set is presented in a standardized and structural...

## Structural variation (struc.var.)

Structural variation (struc.var.) Abbreviation Struc.var. Definition in words Kind-of-property designating sequence variation consisting of deviations in the position of one or more parts of the sequence from a reference sequence of the same kind. Note: Used to...

## Variation (var.)

Variation (var.) Abbreviation Var. Definition in words Kind-of-property of entitic sequences (of DNA, chromosomes, genes, RNA, proteins) consisting in deviations from parts of a reference sequence of the same kind. (Ref 1.) Systematic terms Variation of component B in...

**Nominal kind-of-property**

## Category

Category Synonym Kind, type, class, classifications, grouping, sort Definition in words Kind-of-nominal-property indicating a class among nominal properties ordered according to nominal property values of a specified nominal property value set without relation to size...

## Clarity

Clarity Definition in words Component B in system 1 is assigned a clarity category Systematic terms Clarity of component B in system 1 Result type Nominal descrption Value sets are words Algebraic operations are not allowed Possible comparison of value sets (a=b; a≠b)...

## Colour

Colour Definition in words Component B in system 1 is assigned a clarity category Systematic terms Colour of component B in system 1 Result type Nominal descrption Value sets are words Algebraic operations are not allowed Possible comparison of value sets (a=b; a≠b)...

## Taxon

Taxon Synonym Hierarchical and structural classifications for plants and organisms Definition in words Category according to a hierarchical and structural concept system by International conventions Systematic terms Taxon of component B in system 1 Result type Nominal...