| slovo | definícia |
operculum
(encz) | operculum,operkulum n: Zdeněk Brož |
operculum
(encz) | operculum,příklopka n: Zdeněk Brož |
operculum
(encz) | operculum,skřele Zdeněk Brož |
operculum
(encz) | operculum,víčko n: Zdeněk Brož |
Operculum
(gcide) | 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.
[1913 Webster]
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.
[1913 Webster]
3. (Zool.)
(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.
[1913 Webster] |
operculum
(wn) | operculum
n 1: 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 |
| | podobné slovo | definícia |
operculum
(encz) | operculum,operkulum n: Zdeněk Brožoperculum,příklopka n: Zdeněk Brožoperculum,skřele Zdeněk Brožoperculum,víčko n: Zdeněk Brož |
Interoperculum
(gcide) | Interoperculum \In`ter*o*per"cu*lum\, n.; pl. -la (-l[.a]).
(Anat.)
The postero-inferior opercular bone, in fishes.
[1913 Webster] |
Operculums
(gcide) | 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.
[1913 Webster]
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.
[1913 Webster]
3. (Zool.)
(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.
[1913 Webster] |
Praeoperculum
(gcide) | Praeoperculum \Pr[ae]`o*per"cu*lum\, n. [NL.] (Anat.)
Same as Preoperculum. -- Pr[ae]`o*per"cu*lar, a.
[1913 Webster] Praescutum
Praescapula
Praepubis
Praeoral |
Preoperculum
(gcide) | Preoperculum \Pre`o*per"cu*lum\, n. [NL.] (Anat.)
The anterior opercular bone in fishes.
[1913 Webster] |
Spiral operculum
(gcide) | Spiral \Spi"ral\, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
[1913 Webster]
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
[1913 Webster]
3. (Geom.) Of or pertaining to a spiral; like a spiral.
[1913 Webster]
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4.
[1913 Webster] |
Suboperculum
(gcide) | Suboperculum \Sub`o*per"cu*lum\, n. [NL. See Sub-,
Operculum.] (Anat.)
The lower opercular bone in fishes.
[1913 Webster] Suborbicular |
operculum
(wn) | operculum
n 1: 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 |
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