-ōzhən noun
( -s )
Etymology: French éclosion, from éclore to hatch, from (assumed) Vulgar Latin exclaudere to hatch out (transitive), alteration (influenced by Latin claudere to close) of Latin excludere to hatch out (transitive), exclude — more at exclude , close
1. of a full-grown insect : the act of emerging from the pupal case
2. of an insect larva : the act of hatching from the egg