Nominal property value attributed by agreement to a nominal property for a given purpose.
Example: "Red" for "Blood(oxygenated)–Blood; colour"
Source:
PAC, 2018, 90, 913. 'Vocabulary on nominal property, examination, and related concepts for clinical laboratory sciences (IFCC-IUPAC Recommendations 2017)' on page 923 (https://doi.org/10.1515/pac-2011-0613)