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...

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

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

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

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..

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

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

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

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

Suboperculum :: Subopercular (n.) The suboperculum.

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

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

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

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

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..

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..

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

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

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

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

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

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