'Retroflexion' definitions:

Definition of 'retroflexion'

From: WordNet
noun
A turning or tilting backward of an organ or body part; "retroversion of the uterus" [syn: retroversion, retroflection, retroflexion]
noun
An articulatory gesture made by turning the tip of the tongue back against the roof of the mouth [syn: retroflection, retroflexion]
noun
The act of bending backward [syn: retroflection, retroflexion]

Definition of 'Retroflexion'

From: GCIDE
  • Retroflexion \Re`tro*flex"ion\, n. The act of reflexing; the state of being retroflexed. Cf. Retroversion. [1913 Webster] Retrofract