operculum|opercula|operculums in English

noun

[o·per·cu·lum || əʊ'pɜrkjələm /ɒ'pɜːkjʊ-]

body part which serves as a covering (Anatomy, Botany, and Zoology)

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1. If the operculum does not disappear, recommended treatment is extraction of the wisdom tooth.

2. III (OF 4) WILLIAM KIRBY The operculum is Corneous, with the nucleus near the outer edge.

3. About 40–50 scales occur between the operculum and the anus, and 36–40 around the body before the origin of the dorsal fin.

4. Bilateral lesions of the opercula frontoparietalia are uncommon and cause a symptom cluster including anarthria, severe dysphagia, inability to chew and sometimes facial paresis.

5. ‘In amphibians, the Columella shares the oval window with a second bone, the operculum, which communicates by way of an opercular muscle with the pectoral girdle.’

6. As the stamens expand, the operculum is forced off, splitting away from the cup-like base of the flower; this is one of the features that unites the genus.

7. Avicularium The Avicularium in cheilostome bryozoans is a modified, non-feeding zooid. The operculum, which normally closes the orifice when the zooids tentacles are retracted, has been modified to become a mandible

8. Other articles where Columella is discussed: amphibian: Common features: …unique to lissamphibians is the Columella-opercular complex, a pair of elements associated with the auditory capsule that transmit airborne (Columella) or seismic (operculum) signals.

9. The products of their unions are zygotes, and fertilization occurs when the sperm swim through an opening (operculum) from each antheridium along a thin film of water to the neck of each Archegonium.

10. Systematics of Indo-Pacific Philippia (Psilaxis), Architectonicid Gastropods with Eggs and Young in the Umbilicus' ROBERT ROBERTSON2 ABSTRACT : The subgenus Psilaxis Woodring is distinguished from Philippia Gray, s.s., on the basis of differences in the shells, jaws, opercula, and doubtfully radulae.

11. Architectonicid opercula share a construction of spirally arranged horny lamellae, with a peg-like process on the body side by which it is anchored to the foot muscle. The group shows various buccal and radular specializations for feeding on hexacorallian coelenterates such as stony corals, sea anemones, and zoanthids.

12. The Avicularium type of zooid has a small body and a rudimentary polypide; the operculum, however, is proportionally larger, has strong adductor (closing) muscles, and has become, in effect, a jaw. Avicularia are found among normal zooids but usually are smaller and attached to normal zooids, as in the gymnolaemate Schizoporella.

13. Anche la Branchia singola è coperta.: Also the single gill is covered.: Avevano sacchetti faringei separati della Branchia lungo il lato della testa, che erano permanente aperti senza l'opercolo protettivo.: They had up to eight separate pharyngeal gill pouches along the side of the head, which were permanently open with no protective operculum.: Un paio di gangli parietali si trovano lungo