Search:operculum -> OPERCULUM
operculum
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- Operculum - n. - The lid of a pitcherform leaf.
- Operculum - n. - The lid of the urnlike capsule of mosses.
- Operculum - n. - Any lidlike or operculiform process or part; as, the opercula of a dental follicle.
- 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 - n. - The principal opercular bone in the upper and posterior part of the gill cover.
- Operculum - n. - The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda.
- Operculum - n. - Any lid-shaped structure closing the aperture of a tube or shell.
- Operculums - pl. - of Operculum
- Opercular - n. - The principal opercular bone or operculum of fishes.
- Tergum - n. - One of the dorsal plates of the operculum of a cirriped.
- 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.
- 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.
- Scutum - n. - One of the two lower valves of the operculum of a barnacle.
- Paucispiral - a. - Having few spirals, or whorls; as, a paucispiral operculum or shell.