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1
quantity
property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as a number and a reference
EnglishJCGM/WG 2007 (Eng)quantity
0
EnglishQ
2
2
kind of quantity
aspect common to mutually comparable quantities
EnglishJCGM/WG 2007 (Eng)kind of quantity
0
EnglishK
4
3
system of quantities
set of quantities together with a set of non-contradictory equations relating those quantities
EnglishJCGM/WG 2007 (Eng)system of quantities
0
EnglishS
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4
base quantity
quantity in a conventionally chosen subset of a given system of quantities, where no subset quantity can be expressed in terms of the others
EnglishJCGM/WG 2007 (Eng)base quantity
0
EnglishB
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5
derived quantity
quantity, in a system of quantities, defined in terms of  the base quantities of that system
EnglishJCGM/WG 2007 (Eng)derived quantity
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EnglishD
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6
International System of Quantities
system of quantities based on the seven base quantities length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
EnglishJCGM/WG 2007 (Eng)International System of Quantities
0
EnglishI
9
7
quantity dimension
expression of the dependence of a quantity on the base quantities of a system of quantities as a product of powers of factors corresponding to the base quantities, omitting any numerical factor
EnglishJCGM/WG 2007 (Eng)quantity dimension
0
EnglishQ
12
8
quantity of dimension one
quantity for which all the exponents of the factors corresponding to the base quantities in its quantity dimension are zero
EnglishJCGM/WG 2007 (Eng)quantity of dimension one
0
EnglishQ
14
9
measurement unit
real scalar quantity, defined and adopted by convention, with which any other quantity of the same kind can be compared to express the ratio of the two quantities as a number
EnglishJCGM/WG 2007 (Eng)measurement unit
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EnglishM
17
10
base unit
measurement unit that is adopted by convention for a base quantity
EnglishJCGM/WG 2007 (Eng)base unit
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EnglishB
18
11
derived unit
measurement unit for a derived quantity
EnglishJCGM/WG 2007 (Eng)derived unit
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EnglishD
19
12
coherent derived unit
derived unit that, for a given system of quantities and for a chosen set of base units, is a product of powers of base units with no other proportionality factor than one
EnglishJCGM/WG 2007 (Eng)coherent derived unit
0
EnglishC
20
13
system of units
set of base units and derived units, together with their multiples and submultiples, defined in accordance with given rules, for a given system of quantities
EnglishJCGM/WG 2007 (Eng)system of units
0
EnglishS
21
14
coherent system of units
system of units, based on a given system of quantities, in which the measurement unit for each derived quantity is a coherent derived unit
EnglishJCGM/WG 2007 (Eng)coherent system of units
0
EnglishC
22
15
off-system measurement unit
measurement unit that does not belong to a given system of units
EnglishJCGM/WG 2007 (Eng)off-system measurement unit
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EnglishO
24
16
International System of Units
system of units based on the International System of Quantities, their names and symbols,  including a series of prefixes and their names and symbols, together with rules for their use, adopted by the General Conference on Weights and Measures (CGPM)
EnglishJCGM/WG 2007 (Eng)International System of Units
0
EnglishI
26
17
multiple of a unit
measurement unit obtained by multiplying a given measurement unit by an integer greater than one
EnglishJCGM/WG 2007 (Eng)multiple of a unit
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EnglishM
29
18
submultiple of a unit
measurement unit obtained by dividing a given measurement unit by an integer greater than one
EnglishJCGM/WG 2007 (Eng)submultiple of a unit
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EnglishS
30
19
quantity valuem
number and reference together expressing magnitude of a quantity
EnglishJCGM/WG 2007 (Eng)quantity valuem
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EnglishQ
34
20
numerical quantity value
number in the expression of a quantity value, other than any number serving as the reference
EnglishJCGM/WG 2007 (Eng)numerical quantity value
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EnglishN
37
21
quantity calculus
set of mathematical rules and operations applied to quantities other than ordinal quantities
EnglishJCGM/WG 2007 (Eng)quantity calculus
0
EnglishQ
38
22
quantity equation
mathematical relation between quantities in a given system of quantities, independent of measurement units
EnglishJCGM/WG 2007 (Eng)quantity equation
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EnglishQ
39
23
unit equation
mathematical relation between base units, coherent derived units or other measurement units
EnglishJCGM/WG 2007 (Eng)unit equation
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EnglishU
40
24
conversion factor between units
ratio of two measurement units for quantities of the same kind
EnglishJCGM/WG 2007 (Eng)conversion factor between units
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EnglishC
41
25
numerical value equation
mathematical relation between numerical quantity values, based on a given quantity equation and specified measurement units
EnglishJCGM/WG 2007 (Eng)numerical value equation
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EnglishN
43
26
ordinal quantity
quantity, defined by a conventional measurement procedure, for which a total ordering relation can be established, according to magnitude, with other quantities of the same kind, but for which no algebraic operations among those quantities exis
EnglishJCGM/WG 2007 (Eng)ordinal quantity
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EnglishO
44
27
quantity-value scale
ordered set of quantity values of quantities of a given kind of quantity used in ranking, according to magnitude, quantities of  that kind
EnglishJCGM/WG 2007 (Eng)quantity-value scale
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EnglishQ
46
28
ordinal quantity-value scale
quantity-value scale for ordinal quantities
EnglishJCGM/WG 2007 (Eng)ordinal quantity-value scale
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EnglishO
48
29
conventional reference scale
quantity-value scale defined by formal agreement
EnglishJCGM/WG 2007 (Eng)conventional reference scale
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EnglishC
49
30
nominal property
property of a phenomenon , body, or substance, where the property has no magnitude
EnglishJCGM/WG 2007 (Eng)nominal property
0
EnglishN
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