operculum

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o·per·cu·lum

 (ō-pûr′kyə-ləm)
n. pl. o·per·cu·la (-lə) or o·per·cu·lums
Biology A lidlike structure covering an opening, especially:
a. A bony plate that covers and protects the gills of most bony fishes. Also called gill cover.
b. A horny or calcareous plate attached to the foot of most larval and many adult gastropods, used to close the aperture when the animal retracts into its shell.
c. A covering at the top of the spore capsule of most mosses, falling off when mature spores are released.

[Latin, lid, from operīre, to cover; see wer- in Indo-European roots.]

o·per′cu·lar (-lər) adj.

operculum

(əʊˈpɜːkjʊləm) or

opercule

n, pl -la (-lə) or -lums
1. (Zoology) zoology
a. the hard bony flap covering the gill slits in fishes
b. the bony plate in certain gastropods covering the opening of the shell when the body is withdrawn
2. (Botany) botany the covering of the spore-bearing capsule of a moss
3. (Biology) biology any other covering or lid in various organisms
[C18: via New Latin from Latin: lid, from operīre to cover]
oˈpercular, operculate, operculated adj

o•per•cu•lum

(oʊˈpɜr kyə ləm)

n., pl. -la (-lə), -lums.
1. a part or organ serving as a lid or cover, as a covering flap on a seed vessel.
2. the gill cover of fishes and amphibians.
[1705–15; < New Latin, Latin: lid, cover]
o•per′cu•lar, adj.

o·per·cu·lum

(ō-pûr′kyə-ləm)
A lid or flap covering an opening, such as the gill cover in some fish or the horny flap covering the opening of a snail.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.operculum - 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 retractedoperculum - 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
plate - any flat platelike body structure or part
Translations
kiduskansi

operculum

[əʊˈpɜːkjʊləm] nopercolo

o·per·cu·lum

n. opérculo.
1. cubierta o tapadera;
2. una de las partes del cerebro que cubre la ínsula.