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eclose Line breaks: eclose
Pronunciation: /ɪˈkləʊz/

Definition of eclose in English:


[no object] Entomology
(Of an insect) emerge as an adult from the pupa or as a larva from the egg: some larvae pupated and eclosed substantially earlier than average
More example sentences
  • Adult wasps eclosed within 1-3 days after arrival and were tested at ages of 5-11 days.
  • Approximately 10-12 hr later, the two sides reappose and remain attached until the adult fly ecloses from the pupal case.
  • These ‘large larvae’ wander for an extended period before death, although rare escapers can progress to giant pupae that fail to eclose as adults.


Pronunciation: /ɪˈkləʊʒ(ə)n/
Example sentences
  • Aggression towards non-nest mates is provoked almost exclusively by chemical cues that are learned shortly after eclosion from the pupal life stage.
  • In addition, developmental times to pupation and adult eclosion, pupal weights, and survival/mortality were measured for all insects.
  • All of these results show that the pupal male was almost always killed by the already eclosed male immediately after, or even before, eclosion.


Late 19th century (as eclosion): from French éclore 'to hatch', based on Latin ex- 'out' + claudere 'to close'.

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