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EnglishEdit

EtymologyEdit

Borrowed from Latin operculum.

NounEdit

operculum (plural opercula)

  1. (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.
  2. (botany) The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds.
  3. 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.

Related termsEdit

Derived termsEdit

TranslationsEdit


LatinEdit

EtymologyEdit

From operiō (I close) +‎ -culum.

PronunciationEdit

NounEdit

operculum n (genitive operculī); second declension

  1. cover, covering

DeclensionEdit

Second-declension noun (neuter).

Case Singular Plural
Nominative operculum opercula
Genitive operculī operculōrum
Dative operculō operculīs
Accusative operculum opercula
Ablative operculō operculīs
Vocative operculum opercula

DescendantsEdit

ReferencesEdit