derived kind of quantity

https://doi.org/10.1351/goldbook.D01612
A kind of quantity characterized by an equation between base kinds of quantities, e.g. mass concentration = mass length.
Source:
PAC, 1979, 51, 2451. 'Quantities and Units in Clinical Chemistry' on page 2460 (https://doi.org/10.1351/pac197951122451)