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operculum

/əʊˈpɜː.kjʊ.ləm/

Traduction: Nom désignant une structure dure en forme d'opercule ou de couvercle, servant de protection, par exemple pour les fentes branchiales des poissons ou l'ouverture de la coquille de certains gastéropodes lorsque le corps est rétracté à l'intérieur.

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noun

C2formalcommonscientific/əʊˈpɜː.kjʊ.ləm/

A noun referring to a hard, lid-like structure that serves as a covering, such as for the gill slits in fishes or the opening of a shell in certain gastropods when the body is retracted.

  • 🇫🇷Nom désignant une structure dure en forme d'opercule ou de couvercle, servant de protection, par exemple pour les fentes branchiales des poissons ou l'ouverture de la coquille de certains gastéropodes lorsque le corps est rétracté à l'intérieur.
  1. Fish gill cover C1 formal scientific

    A hard, bony flap that covers and protects the gills of most bony fish.

    • The operculum of the fish opened and closed rhythmically as it breathed.
    • Scientists examined the operculum to determine the fish's age.
    • Damage to the operculum can impair a fish's ability to respire.

    🇫🇷Opercule

  2. Snail shell door C1 formal scientific

    A hard, plate-like structure that some snails and gastropods use to seal the opening of their shell when they retract inside.

    • When the snail withdrew into its shell, the operculum sealed the entrance.
    • The operculum of the marine snail was collected for its decorative value.
    • The operculum protects the snail from predators and dehydration.

    🇫🇷Opercule (coquille de gastéropode)

    Synonymes: lid

  • opercula plural form
  • operculums plural form
  • opercula's possessive plural form
  • operculums' possessive plural form
  • operculum's possessive singular form