Medical term:
opercula
operculum
[o-per´ku-lum] (L.)1. a lid or covering.
2. the folds of pallium from the frontal, parietal, and temporal lobes of the cerebrum overlying the insula. adj., adj oper´cular.
dental operculum the hood of gingival tissue overlying the crown of an erupting tooth.
trophoblastic operculum the plug of trophoblast that helps close the gap in the endometrium made by the implanting blastocyst.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
o·per·cu·lum
, gen.o·per·cu·li
, pl.o·per·cu·la
(ō-per'kyū-lŭm, -lī, -lă),1. Anything resembling a lid or cover.
2. In anatomy, the portions of the frontal (operculum frontale [TA], frontal operculum [TA]), parietal (operculum parietale [TA], parietal operculum [TA]), and temporal (operculum temporale [TA], temporal operculum [TA]) lobes bordering the lateral sulcus and covering the insula.
3. In parasitology, the lid or caplike cover of the shell opening of operculated freshwater snails in the subclass Prosobranchiata, and of the eggs of certain trematode and cestode parasites.
4. The attached flap in the tear of retinal detachment.
5. The mucosal flap partially or completely covering an unerupted tooth.
[L. cover or lid, fr. operio, pp. opertus, to cover]
Farlex Partner Medical Dictionary © Farlex 2012
operculum
(ō-pûr′kyə-ləm)n. pl. opercu·lums or opercu·la (-lə)
1. Something resembling a lid or cover.
2. The portions of the frontal, parietal, and temporal lobes covering the insula.
3. A bit of mucus sealing the endocervical canal of the uterus after conception.
4. The attached flap in cases of torn retinal detachment.
o·per′cu·lar (-lər) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
o·per·cu·lum
, pl. opercula (ō-pĕr'kyū-lŭm, -lă) [TA]1. Anything resembling a lid or cover.
2. [TA] anatomy The portions of the frontal, parietal, and temporal lobes bordering the lateral sulcus and covering the insula.
3. Mucus sealing the endocervical canal of the uterus after conception has taken place.
4. parasitology The lid or caplike cover of the shell opening of operculated freshwater snails in the subclass Prosobranchiata, and of the eggs of certain trematode and cestode parasites.
5. The attached flap in the tear of retinal detachment.
6. The mucosal flap partially or completely covering a partially erupted tooth.
[L. cover or lid, fr. operio, pp. opertus, to cover]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
operculum
A covering membrane, flap or lid of tissue, especially in the brain, or over an erupting tooth.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
operculum
- the lid of a MOSS capsule.
- a hard bony flap covering the gills of fishes.
- the plate of exoskeletal material on the foot of a gastropod mollusc with which it closes off the entrance to the shell.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
operculum
A flap of detached retina which projects forward, or is totally free in the vitreous. It can happen as a result of a retinal tear (break).
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
o·per·cu·lum
, pl. opercula (ō-pĕr'kyū-lŭm, -lă) [TA]1. [TA] The mucosal flap partially or completely covering an unerupted tooth.
2. Anything resembling a lid or cover.
[L. cover or lid, fr. operio, pp. opertus, to cover]
Medical Dictionary for the Dental Professions © Farlex 2012
o·per·cu·lar
(ō-per'kyū-lăr),Relating to an operculum.
Farlex Partner Medical Dictionary © Farlex 2012
o·per·cu·lar
(ō-pĕr'kyū-lăr)Relating to an operculum.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
operculum
(ō-pĕr′kū-lŭm) plural.opercula [L., a cover]1. Any lid or covering.
2. The narrow opening at the top of the thoracic cage bordered by the sternum and first ribs.
3. The plug of mucus that fills the opening of the cervix on impregnation.
4. The convolutions of the cerebrum, the margins of which are separated by the lateral cerebral (sylvian) fissure. The opercula cover the insula. opercular (ō-pĕr′kū-lăr), adjective
dental operculum
The soft tissue overlying the crown of a partially erupted tooth.
trophoblastic operculum
The plug of fibrin that covers the opening in the endometrium made by implantation of the blastocyst.
Medical Dictionary, © 2009 Farlex and Partners
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