operculum
IPA: ɑpɝkjʌɫʌm
noun
- (zoology) A covering flap in animals, such as a gill cover.
- (botany) The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds.
- (dentistry) A gum flap covering (part of) a partially erupted tooth, usually a wisdom tooth.
- A structure which serves as a cover or lid.
- (anatomy) One of several flaps of cerebral cortex covering the insula.
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Examples of "operculum" in Sentences
- Note the presence of the operculum.
- The operculum is absent in this family.
- The operculum is horny and paucispiral.
- The color of the operculum is light horn.
- The operculum in this genus is calcareous.
- The aperture is closed by a horny operculum.
- The diameter of the operculum is about 13 mm.
- Rhythmic movements of the jaw and operculum begin.
- The horny operculum is composed of corneous material.
- The first dorsal and anal fins are spinous as is the operculum.
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