One of the mysteries of the English language finally explained.
verb[WITH OBJECT]Physiology Biology
Turn (a structure or organ) outwards or inside out.‘the brown hyena deposits chemicals by everting an anal pouch’‘the characteristic facial appearance of full, often everted lips’
turn inside outView synonyms
- ‘The cyst wall is then everted and approximated to the edge of the vestibular mucosa with interrupted 2-0 absorbable suture.’
- ‘They feed by grasping the prey, then everting their stomach and secreting primary enzymes on the prey.’
- ‘To facilitate patellar cartilage removal, the first assistant clamps the medial edges of the tendons above and below the patella and everts the tissue.’
- ‘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.’
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.
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