RETROFLEX Meaning of RETROFLEX in English adj. (also retroflexed) 1 Anat., Med., & Bot. turned backwards. 2 Phonet. = CACUMINAL. retroflexion n.[ L retroflectere retroflex- (as RETRO-, flectere bend) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012