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...

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..

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

Operculum :: Operculum (n.) The principal opercular bone in the upper and posterior part of the gill cover.

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

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

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

Opercle :: Opercle (n.) An operculum.

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

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

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..

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

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

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

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

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

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

Operculums :: Operculums (pl. ) of Operculu.

Suboperculum :: Subopercular (n.) The suboperculum.

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

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

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