资料来源 : pyDict

operculum的复数形

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Opercula \O*per"cu*la\, n. pl.
   See {Operculum}.

Operculum \O*per"cu*lum\, n.; pl. L. {Opercula}, E.
   {Operculums}. [L., a cover or lid, fr. operire to cover.]
   1. (Bot.)
      (a) The lid of a pitcherform leaf.
      (b) The lid of the urnlike capsule of mosses.

   2. (Anat.)
      (a) Any lidlike or operculiform process or part; as, the
          opercula of a dental follicle.
      (b) 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.
      (c) The principal opercular bone in the upper and
          posterior part of the gill cover.

   3. (Zo["o]l.)
      (a) The lid closing the aperture of various species of
          shells, as the common whelk. See Illust. of
          {Gastropoda}.
      (b) Any lid-shaped structure closing the aperture of a
          tube or shell.

资料来源 : WordNet®

operculum
     n : a hard flap serving as a cover for (a) the gill slits in
         fishes or (b) the opening of the shell in certain
         gastropods when the body is retracted
     [also: {opercula} (pl)]

opercula
     See {operculum}