Operculiform :: Operculiform (a.) Having the form of a lid or cover.
Operculigenous :: Operculigenous (a.) Producing an operculum; -- said of the foot, or part of the foot, of certain mollusks..
Operculum :: Operculum (n.) The lid of a pitcherform leaf.
Operculum :: Operculum (n.) The lid of the urnlike capsule of mosses.
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.) The principal opercular bone in the upper and posterior part of the gill cover.
Operculum :: Operculum (n.) The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda..
Operculum :: Operculum (n.) Any lid-shaped structure closing the aperture of a tube or shell.