Determinative /(?)/

De·ter·mi·na·tive

Determinative

a.
  1. Having power to determine; limiting; shaping; directing; conclusive.
    Incidents . . . determinative of their course.

Phrases & Compounds

Determinative tables
tables presenting the specific character of minerals, plants, etc., to assist in determining the species to which a specimen belongs.

Determinative

n.
  1. That which serves to determine.
    Explanatory determinatives . . . were placed after words phonetically expressed, in order to serve as an aid to the reader in determining the meaning.