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Meaning of RETROGRESSION

Pronunciation:  `retru'greshun

 
WordNet Dictionary
 
 Definition: 
  1. [n]  returning to a former state
  2. [n]  passing from a more complex to a simpler biological form
 

RETROGRESSION is a 13 letter word that starts with R.

 

 Synonyms: degeneration, regress, regression, retroversion, reversion
 
 See Also: abiotrophy, cataplasia, reversal, shift, transformation, transmutation

 

 

Webster's 1913 Dictionary
 
 Definition: 
\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}.

 
Biology Dictionary
 
 Definition: Reversal of stream grading (i.e., aggradation after degradation or vice versa).
 

 

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