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retroflex

American  
[re-truh-fleks] / ˈrɛ trəˌflɛks /
Also retroflexed

adjective

  1. bent backward; exhibiting retroflexion.

  2. Phonetics. articulated with the tip of the tongue curled upward and back against or near the juncture of the hard and soft palates; cacuminal; cerebral; coronal.


retroflex British  
/ ˈrɛtrəʊˌflɛks /

adjective

  1. bent or curved backwards

  2. phonetics of, relating to, or involving retroflexion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of retroflex

First recorded in 1910–15, retroflex is from the Latin word retrōflexus (past participle of retrōflectere to bend back). See retro-, flex 1