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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..

Eyestone :: Eyestone (n.) A small, lenticular, calcareous body, esp. an operculum of a small marine shell of the family Turbinidae, used to remove a foreign substance from the eye. It is put into the inner corner of the eye under the lid, and allowed to work its way out at the outer corner, bringing with it the substance..

Tergum :: Tergum (n.) One of the dorsal plates of the operculum of a cirriped.

Preopercular :: Preopercular (n.) The preoperculum.

Oparcular :: Oparcular (a.) Of, pertaining to, or like, 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..

Suboperculum :: Subopercular (n.) The suboperculum.

Operculums :: Operculums (pl. ) of Operculu.

Inoperculate :: Inoperculate (a.) Having no operculum; -- said of certain gastropod shells.

Nucleus :: Nucleus (n.) The central part around which additional growths are added, as of an operculum..

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

Interoperculum :: Interoperculum (n.) The postero-inferior opercular bone, in fishes..

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

Operculum :: Operculum (n.) The lid of the urnlike capsule of mosses.

Operculigenous :: Operculigenous (a.) Producing an operculum; -- said of the foot, or part of the foot, of certain mollusks..

Opercular :: Opercular (n.) The principal opercular bone or operculum of fishes.

Interpercular :: Interpercular (a.) Of or pertaining to the interoperculum.

Unoperculated :: Unoperculated (a.) Destitute of an operculum, or cover..

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..

Onycha :: Onycha (n.) An ingredient of the Mosaic incense, probably the operculum of some kind of strombus..

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