Kind-of-nominal-property indicating a class among nominal properties ordered according to nominal property values of a specified nominal property value set without relation to size.
Example: Blood type A is a nominal property value within the blood group system ABO where the nominal property value set is {A, B, AB, O}.
Source:
PAC, 2018, 90, 913. 'Vocabulary on nominal property, examination, and related concepts for clinical laboratory sciences (IFCC-IUPAC Recommendations 2017)' on page 916 (https://doi.org/10.1515/pac-2011-0613)