operculum

play
noun oper·cu·lum \ō-ˈpər-kyə-ləm\

Definition of operculum

plural

opercula

play \-lə\ also

operculums

  1. 1 :  a body process or part that suggests a lid: as a :  a horny or shelly plate on the posterior dorsal surface of the foot in many gastropod mollusks that closes the shell when the animal is retracted b :  the covering of the gills of a fish — see fish illustration

  2. 2 :  a lid or covering flap (as of a moss capsule)

Origin and Etymology of operculum

New Latin, from Latin, cover, from operire to shut, cover


First Known Use: 1681


Medical Dictionary

operculum

play
noun oper·cu·lum \ō-ˈpər-kyə-ləm\

Medical Definition of operculum

plural

opercula

\-lə\play also

operculums

  1. :  any of several parts of the cerebrum bordering the sylvian fissure and concealing the insula


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