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

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

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..

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..

Operculums :: Operculums (pl. ) of Operculu.

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

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

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

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

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..

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

Preopercular :: Preopercular (n.) The preoperculum.

Valvata :: Valvata (n.) A genus of small spiral fresh-water gastropods having an operculum.

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.

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

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

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

Operculum :: Operculum (n.) The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda..

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..

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