Operculum meaning

ō-pûrkyə-ləm
(biology) A lidlike structure covering an opening, especially:
  • A bony plate that covers and protects the gills of most bony fishes.
  • A horny or calcareous plate attached to the foot of most larval and many adult gastropods, used to close the aperture when the animal retracts into its shell.
  • A covering at the top of the spore capsule of most mosses, falling off when mature spores are released.
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Any of various covering flaps or lidlike structures in plants and animals.
  • The bony covering protecting the gills of fishes.
  • In many gastropods, the horny plate serving to close the shell when the animal is retracted.
  • The lidlike structure of a spore case in mosses.
  • The lidlike structure of a pitcher-shaped leaf.
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Something resembling a lid or cover.
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The portions of the frontal, parietal, and temporal lobes covering the insula.
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A bit of mucus sealing the endocervical canal of the uterus after conception.
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The attached flap in cases of torn retinal detachment.
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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.
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A covering flap or lidlike structure in plants and animals, such as a gill cover.
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Origin of operculum

  • Latin lid from operīre to cover wer-4 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin operculum.

    From Wiktionary