particular property
A property of a given object (phenomenon, body or substance). 'Particular property' includes the concept of particular quantity. The adjective 'particular' may be omitted, if no ambiguity is caused.
See also:
PAC, 1995, 67, 1563. (Properties and units in the clinical laboratory sciences-I. Syntax and semantic rules (IUPAC-IFCC Recommendations 1995)) on page 1565 [Terms] [Paper]