The Collaborative International Dictionary
Determinative tables
Determinative \De*ter"mi*na*tive\, a. [Cf. F. d['e]terminatif.] 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.