|—n , pl -la, -lums|
|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|b. the bony plate in certain gastropods covering the opening of the shell when the body is withdrawn|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 the covering of the spore-bearing capsule of a moss|
|3.||biology any other covering or lid in various organisms|
|[C18: via New Latin from Latin: lid, from operīre to cover]|
operculum o·per·cu·lum (ō-pûr'kyə-ləm)
n. pl. o·per·cu·lums or o·per·cu·la (-lə)
Something resembling a lid or cover.
The portions of the frontal, parietal, and temporal lobes covering the insula.
The mucus sealing the endocervical canal of the uterus after conception.
The attached flap in cases of torn retinal detachment.
The mucosal flap partially or completely covering an unerupted tooth.
|operculum (ō-pûr'kyə-ləm) Pronunciation Key
Plural opercula or operculums
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.