REGRESSIVE

regressive. Regressive, a. returning, going or coming back

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Re‐gress″ive (r?‐gr?s″?v), a. [[Cf. F. régressif.]] 1. 1. Passing back; returning.
2. 2. Characterized by retrogression; retrogressive.
Regressive metamorphism. (a) (Biol.) See Retrogression. (b) (Physiol.) See Katabolism.