[ ih-kloh-zhuh n ]
/ ɪˈkloʊ ʒən /

noun Entomology.

the emergence of an adult insect from its pupal case.
the hatching of a larva from its egg.

Origin of eclosion

1885–90; < French éclosion, equivalent to éclos (past participle of éclore to hatch < Vulgar Latin *exclaudēre, for Latin exclūdēre to hatch, exclude) + -ion -ion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for eclosion

  • The chrysalids under the sod, their eclosion time completed, were coming into their own—bringing perfection with them.

    Pet Farm|Roger Dee

British Dictionary definitions for eclosion

/ (ɪˈkləʊʒən) /


the emergence of an insect larva from the egg or an adult from the pupal case

Word Origin for eclosion

C19: from French éclosion, from éclore to hatch, ultimately from Latin exclūdere to shut out, exclude
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012