De-tĕr'mi-na-tive, a.

a. [Fr. déterminatif, It. & Sp. determinatio.] Having power to determine; limiting; shaping; directing; conclusive. “Incidents . . . determinative of their course.” J. Taylor.

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