eclo·​sion i-ˈklō-zhən How to pronounce eclosion (audio)
of an insect
: the act of emerging from the pupal case or hatching from the egg

Word History


borrowed from French éclosion, from éclos-, variant stem of éclore "to hatch (from an egg), emerge (from a cocoon)" (going back to Old French esclore, going back to Vulgar Latin *exclaudere, re-formation of Latin exclūdere "to bring out from its container, hatch from an egg") + -ion -ion — more at exclude

First Known Use

circa 1889, in the meaning defined above

Time Traveler
The first known use of eclosion was circa 1889

Dictionary Entries Near eclosion

Cite this Entry

“Eclosion.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2023.

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