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operculum

  • noun
  • /əʊˈpɜː.kjʊ.ləm/

A covering flap in animals, such as a gill cover.

Other meanings

  1. The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds.

  2. A gum flap covering (part of) a partially erupted tooth, usually a wisdom tooth.

A kind of

  • plate

Related words

  • operculiferous
  • operculitis
  • preoperculum
  • interoperculum
  • suboperculum

Where this comes from

This definition is adapted from “operculum” on Wiktionary, by its contributors; related-word lists use Open English WordNet (CC BY 4.0, based on Princeton WordNet), published under CC BY-SA 4.0. This page is published under the same licence.