Quantity with a magnitude expressed as a reference quantity multiplied by a number.
Note:
In the VIM, the concept is denoted as "quantity expressed by a measurement unit" in the concept diagram Figure A.1 and is referred to as "quantities other than ordinal quantities", for example, in entry 1.21, and as "non-ordinal quantity" in Note 1 to entry 2.41.
Source:
PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1018 (https://doi.org/10.1515/pac-2019-0819)