About The Word Operculum
Learn about the word Operculum to help solve your crossword puzzle. Discover Operculum definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Operculum
| Operculum Definition And Meaning |
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What's The Definition Of Operculum?
[n] 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
Synonyms | Synonyms for Operculum: Related Terms | Find terms related to Operculum: See Also | plate Operculum In Webster's Dictionary \O*per"cu*lum\, n.; pl. L. {Opercula}, E.
{Operculums}. [L., a cover or lid, fr. operire to cover.]
1. (Bot.)
(a) The lid of a pitcherform leaf.
(b) The lid of the urnlike capsule of mosses.
2. (Anat.)
(a) Any lidlike or operculiform process or part; as, the
opercula of a dental follicle.
(b) The fold of integument, usually supported by bony
plates, which protects the gills of most fishes and
some amphibians; the gill cover; the gill lid.
(c) The principal opercular bone in the upper and
posterior part of the gill cover.
3. (Zo["o]l.)
(a) The lid closing the aperture of various species of
shells, as the common whelk. See Illust. of
{Gastropoda}.
(b) Any lid-shaped structure closing the aperture of a
tube or shell.
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