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retrogression |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Retrogression \Re`tro*gres"sion\, n. [Cf. F. r['e]trogression. See {Retrograde}, and cf {Digression}.] 1. The act of retrograding, or going backward; retrogradation. 2. (Biol.) Backward development; a passing from a higher to a lower state of organization or structure, as when an animal, approaching maturity, becomes less highly organized than would be expected from its earlier stages or known relationship. Called also {retrograde development}, and {regressive metamorphism}. From WordNet r 1.6 [wn]: retrogression n 1: passing from a more complex to a simpler biological form [syn: {degeneration}] 2: returning to a former state [syn: {regression}, {regress}, {reversion}, {retroversion}]
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