OPERCULUM

Pronunciation (US):

(GB):

Irregular inflected form: opercula   

 I. (noun) 

Sense 1

Meaning:

A hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted

Classified under:

Nouns denoting animals

Hypernyms ("operculum" is a kind of...):

plate (any flat platelike body structure or part)

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