opercle

[ oh-per-kuhl ]
/ ˈoʊ pər kəl /

noun

an operculum, especially the posterior bone of the operculum of a fish.

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Origin of opercle

First recorded in 1590–1600, opercle is from the Latin word operculum cover. See operculum, -cle2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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