Definition of operculum

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Operculum (n.) Any lid-shaped structure closing the aperture of a tube or shell.

Lern More About Operculum

Nucleus :: Nucleus (n.) The central part around which additional growths are added, as of an operculum..
Inoperculate :: Inoperculate (a.) Having no operculum; -- said of certain gastropod shells.
Opercula :: Opercula (n. pl.) See Operculum.
Turbo :: Turbo (n.) Any one of numerous marine gastropods of the genus Turbo or family Turbinidae, usually having a turbinate shell, pearly on the inside, and a calcareous operculum..
Operculiferous :: Operculiferous (a.) Bearing an operculum.
Operculum :: Operculum (n.) The principal opercular bone in the upper and posterior part of the gill cover.
Suboperculum :: Subopercular (n.) The suboperculum.
Interoperculum :: Interoperculum (n.) The postero-inferior opercular bone, in fishes..
Oparcular :: Oparcular (a.) Of, pertaining to, or like, an operculum..
Unoperculated :: Unoperculated (a.) Destitute of an operculum, or cover..
Paucispiral :: Paucispiral (a.) Having few spirals, or whorls; as, a paucispiral operculum or shell..
Operculum :: Operculum (n.) Any lidlike or operculiform process or part; as, the opercula of a dental follicle..
Interpercular :: Interpercular (a.) Of or pertaining to the interoperculum.
Preoperculum :: Preoperculum (n.) The anterior opercular bone in fishes.
Operculum :: Operculum (n.) The lid of the urnlike capsule of mosses.
Operculums :: Operculums (pl. ) of Operculu.
Preopercular :: Preopercular (a.) Situated in front of the operculum; pertaining to the preoperculum.
Operculated :: Operculated (a.) Having an operculum, or an apparatus for protecting the gills; -- said of shells and of fishes..
Preopercular :: Preopercular (n.) The preoperculum.
Tergum :: Tergum (n.) One of the dorsal plates of the operculum of a cirriped.
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