Etymology: < French éclosion, n. of action of éclore , < é- = ex- prefix1 + clore < Latin claudĕre to shut.
Emergence from concealment; spec. in Entomol., the emerging of an insect from the pupa case, or of a larva from the egg. (OED)
"Flies were collected within 1 day after eclosion, and kept on fresh cornmeal-agar-yeast food until they were 4 to 7 days old."
- Hiroko Inoue et al., "Partial purification and characterization of membrane-associated diacylglycerol kinase of Drosophila heads", Biochimica et Biophysica Acta 1122:219 (1992)