Definition of evert in English:

evert

Line breaks: 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
More example sentences
  • They feed by grasping the prey, then everting their stomach and secreting primary enzymes on the prey.
  • These nozzles could not be confused with ‘eversible gland openings,’ as described by Forsyth, or the obviously everted female spermatheca.
  • Most Asteroidea are predators or scavengers, everting their stomach (called a cardiac stomach), which secretes digestive enzymes on their prey.

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.

Derivatives

eversible

adjective
More example sentences
  • These pores are interpreted as having housed eversible vesicles.
  • Abdominal segments 1-6 have 1-2 pairs of eversible vesicles.
  • Phylum Nemertea contains about 1,150 species of unsegmented worms that possess an eversible proboscis contained in a fluid-filled cavity or rhynchocoel.

eversion

noun
More example sentences
  • The mechanism of injury is excessive dorsiflexion and eversion of the ankle joint with internal rotation of the tibia.
  • We hypothesized that eversion of a dorsiflexed ankle would be more likely to produce an LPT fracture than inversion of a dorsiflexed ankle.
  • In medial ankle sprains, the mechanism of injury is excessive eversion and dorsiflexion.

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