English definition of Operculum

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Definition of operculum

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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..

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

Preoperculum :: Preoperculum (n.) The anterior opercular bone in fishes.

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

Operculums :: Operculums (pl. ) of Operculu.

Scutum :: Scutum (n.) One of the two lower valves of the operculum of a barnacle.

Praeoperculum :: Praeoperculum (n.) Same as Preoperculum.

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

Opercula :: Opercula (n. pl.) See Operculum.

Opercle :: Opercle (n.) An operculum.

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

Rostellum :: Rostellum (n.) A small beaklike process or extension of some part; a small rostrum; as, the rostellum of the stigma of violets, or of the operculum of many mosses; the rostellum on the head of a tapeworm..

Preopercular :: Preopercular (n.) The preoperculum.

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

Operculum :: Operculum (n.) The lid of a pitcherform leaf.

Paucispiral :: Paucispiral (a.) Having few spirals, or whorls; as, a paucispiral operculum or shell..

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

Suboperculum :: Subopercular (n.) The suboperculum.

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..

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