资料来源 : Webster's Revised Unabridged Dictionary (1913)

Regressive \Re*gress"ive\ (r?*gr?s"?v), a. [Cf. F.
   r['e]gressif.]
   1. Passing back; returning.

   2. Characterized by retrogression; retrogressive.

   {Regressive metamorphism}.
      (a) (Biol.) See {Retrogression}.
      (b) (Physiol.) See {Katabolism}.