determine : Idioms & Phrases

• noun a determining or causal element or factor
  causal factor; determinant; determinative; determiner.
  
  • education is an important determinant of one's outlook on life
• noun an argument that is conclusive
  clincher; determiner.
  

WordNet

Self`-de*ter"min*ing adjective

Definitions

1. Capable of self-determination; as, the self-determining power of will.

Webster 1913