operculum
Noun
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Noun
operculum (plural opercula)
- (zoology) A covering flap in animals, such as a gill cover.
- 2017, Susannah Lydon, The Guardian, 18 January ↗:
- Hyoliths […] have a small, conical calcium carbonate shell, with a lid called an operculum.
- 2017, Susannah Lydon, The Guardian, 18 January ↗:
- (botany) The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds.
- A structure which serves as a cover or lid.
- 1901, H. G. Wells, The First Men in the Moon, chapter IX, page 95
- I lifted the circular operculum from its place and laid it carefully on the bale.
- 1901, H. G. Wells, The First Men in the Moon, chapter IX, page 95
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.002