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...

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

Suboperculum :: Subopercular (n.) The suboperculum.

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

Operculiferous :: Operculiferous (a.) Bearing an operculum.

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

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

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..

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

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

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

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

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

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.

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

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

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

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..

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..

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

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