D defs.my
Entry 2 senses · 2 variants Webster, 1913

Determinative

/dĭt-ẽrm'-ĭn-ət-ĭvˌ/ · De·ter·mi·na·tive · IPA /dɪtˈɜrmɪnətˌɪv/
01 a. Having power to determine; limiting; shaping; directing; conclusive.
  1. 1.
    Having power to determine; limiting; shaping; directing; conclusive.
    “Incidents . . . determinative of their course.” I. Taylor.
Phrases & compounds
Determinative tables — tables presenting the specific character of minerals, plants, etc., to assist in determining the species to which a specimen belongs.
02 n. That which serves to determine.
  1. 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.” — I. Taylor (The Alphabet).