Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of operculum is as below...

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

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

Operculums :: Operculums (pl. ) of Operculu.

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..

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

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..

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

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

Preopercular :: Preopercular (n.) The preoperculum.

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..

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.) The principal opercular bone in the upper and posterior part of the gill cover.

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

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

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

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

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

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