evert

 
Pronunciation: /ɪˈvəːt/

verb

[with object] Biology & Physiology
  • turn (a structure or organ) outwards or inside out: the brown hyena deposits chemicals by everting an anal pouch (as adjective everted) the characteristic facial appearance of full, often everted lips

Derivatives

eversible

adjective

eversion

noun

Origin:

mid 16th century (in the sense 'upset, overthrow'): from Latin evertere, from e- (variant of ex-) 'out' + vertere 'to turn'. The current sense dates from the late 18th century