The Collaborative International Dictionary of English v.0.48:

Significative \Sig*nif"i*ca*tive\, a. [L. significativus: cf. F.
   significatif.]
   1. Betokening or representing by an external sign.
      [1913 Webster]

            The holy symbols or signs are not barely
            significative.                        --Brerewood.
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   2. Having signification or meaning; expressive of a meaning
      or purpose; significant.
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            Neither in the degrees of kindred they were
            destitute of significative words.     --Camden.
      [1913 Webster] -- Sig*nif"i*ca*tive*ly, adv. --
      Sig*nif"i*ca*tive*ness, n.
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