Definitions for operculumoʊˈpɜr kyə ləm
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Random House Webster's College Dictionary
o•per•cu•lumoʊˈpɜr kyə ləm(n.)(pl.)-la; -lums.
a part or organ serving as a lid or cover, as a covering flap on a seed vessel.
Category: Botany, Zoology
the gill cover of fishes and amphibians.
Category: Zoology
Origin of operculum:
1705–15; < NL, L: lid, cover
o•per′cu•lar(adj.)
Princeton's WordNet
operculum(noun)
a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted
Wiktionary
operculum(Noun)
A covering flap or lidlike structure in plants and animals, such as a gill cover
Origin: From operire.
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