Definition of operculum

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Operculum (n.) Any lidlike or operculiform process or part; as, the opercula of a dental follicle..

Lern More About Operculum

Operculum :: Operculum (n.) The principal opercular bone in the upper and posterior part of the gill cover.
Opercle :: Opercle (n.) An operculum.
Operculum :: Operculum (n.) Any lid-shaped structure closing the aperture of a tube or shell.
Onycha :: Onycha (n.) An ingredient of the Mosaic incense, probably the operculum of some kind of strombus..
Scutum :: Scutum (n.) One of the two lower valves of the operculum of a barnacle.
Turritella :: Turritella (n.) Any spiral marine gastropod belonging to Turritella and allied genera. These mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral 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..
Praeoperculum :: Praeoperculum (n.) Same as Preoperculum.
Operculum :: Operculum (n.) The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda..
Tergum :: Tergum (n.) One of the dorsal plates of the operculum of a cirriped.
Operculums :: Operculums (pl. ) of Operculu.
Subopercular :: Subopercular (a.) Situated below the operculum; pertaining to the suboperculum.
Oparcular :: Oparcular (a.) Of, pertaining to, or like, an operculum..
Operculum :: Operculum (n.) 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..
Unoperculated :: Unoperculated (a.) Destitute of an operculum, or cover..
Operculiferous :: Operculiferous (a.) Bearing an operculum.
Nucleus :: Nucleus (n.) The central part around which additional growths are added, as of an operculum..
Serpula :: Serpula (n.) Any one of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae. They secrete a calcareous tube, which is usually irregularly contorted, but is sometimes spirally coiled. The worm has a wreath of plumelike and often bright-colored gills around its head, and usually an operculum to close the aperture of its tube when it retracts..
Operculum :: Operculum (n.) The lid of the urnlike capsule of mosses.
Inoperculate :: Inoperculate (a.) Having no operculum; -- said of certain gastropod shells.
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