De*ter"mi*na*tive (?), a. [Cf. F. déterminatif.] Having power to determine; limiting; shaping; directing; conclusive.

Incidents . . . determinative of their course.

I. Taylor.

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

De*ter"mi*na*tive (?), n. 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.

I. Taylor (The Alphabet).