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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..

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

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

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

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

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

Subopercular :: Subopercular (a.) Situated below the operculum; pertaining to the suboperculum.

Operculiferous :: Operculiferous (a.) Bearing an operculum.

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

Operculated :: Operculated (a.) Having an operculum, or an apparatus for protecting the gills; -- said of shells and of fishes..

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

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

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 closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda..

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

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..

Suborbicular :: Suboperculum (n.) The lower opercular bone in fishes.

Preopercular :: Preopercular (a.) Situated in front of the operculum; pertaining to the preoperculum.

Suboperculum :: Subopercular (n.) The suboperculum.

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