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retrogressive

[re-truh-gres-iv] /ˌrɛ trəˈgrɛs ɪv/
adjective
1.
characterized by retrogression; degenerating.
Origin
1795-1805
1795-1805; < Latin retrōgress(us) (see retrogress) + -ive
Related forms
retrogressively, adverb
unretrogressive, adjective
unretrogressively, adverb
Synonyms
backward.
Antonyms
progressive.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for retrogressive
  • It is a retrogressive development to the business community.
  • If the radicals are not stabilized, retrogressive reactions producing materials difficult to liquefy will take place.
  • Once all the available hydrogen is used, retrogressive reactions will set in, leading to coke formation.
  • At higher reaction times, the net coal conversion decreased due to retrogressive reactions.
  • Amphibolite facies retrogressive metamorphism resulted in hypersthene replacement by amphiboles.
  • We have concluded that there would be retrogression intentionally or that the effect would be retrogressive.
  • Failure was not confined to a single failure mode, but ranged instead from retrogressive slides and lateral spreads.
  • Select areas of the granulite facies metamorphic terrane that have been affected by greenschist facies retrogressive metamorphism.
Word Origin and History for retrogressive
adj.

"tending to move backward," 1785, from Latin retrogress-, past participle stem of retrogradi "move backward, go backward" (see retrograde) + -ive. Related: Retrogressively.

Online Etymology Dictionary, © 2010 Douglas Harper
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