D defs.my
Entry 1 sense Webster, 1913

Probative

/prōb-āt'-ĭv/ · Pro·ba·tive · IPA /ˈproʊ.bə.tɪv/
01 a. Serving for trial or proof; probationary; as, probative judgments; probative evidence.
  1. 1.
    Serving for trial or proof; probationary; as, probative judgments; probative evidence.