'Probative' definitions:

Definition of 'probative'

From: WordNet
adjective
Tending to prove a particular proposition or to persuade you of the truth of an allegation; "evidence should only be excluded if its probative value was outweighed by its prejudicial effect" [syn: probative, probatory]

Definition of 'Probative'

From: GCIDE
  • Probative \Pro"ba*tive\, a. [L. probativus: cf. F. probatif.] Serving for trial or proof; probationary; as, probative judgments; probative evidence. --South. [1913 Webster]