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...

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

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

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

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..

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

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..

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

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

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

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..

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

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

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

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.

Opercle :: Opercle (n.) An operculum.

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

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..

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