https://doi.org/10.1351/goldbook.Q04982
Attribute of a phenomenon, body or substance that may be distinguished qualitatively and determined quantitatively.
Notes:
- The term quantity may refer to a quantity in a general sense, for example length, mass, or to a particular quantity, for example length of a particular rod, mass of a specified object.
- The term @K03393@ refers to the abstract concept of a quantity common to a group of related quantities.