determinative

Noun
  1. One of a limited class of noun modifiers that determine the referents of noun phrases (synset 106335468)
  2. A determining or causal element or factor (synset 105700384)
    "education is an important determinant of one's outlook on life"
Adjective
  1. Having the power or quality of deciding (synset 300688059)
    "the crucial experiment"; "cast the deciding vote"; "the determinative (or determinant) battle"

Other Searches