French word opercule comes from Latin operio, and later Latin operculum (Cover, covering.)

Detailed word origin of opercule

Dictionary entry	Language	Definition
operio	Latin (lat)	(by extension) I shut, close.. (figuratively) I hide, conceal, dissemble.. (figuratively) I overwhelm, burden.. (figuratively, of a sin) I atone for, cover, cause to be forgotten.. I cover (over something); envelop.
operculum	Latin (lat)	Cover, covering.
opercule	French (fra)	Operculum.

Words with the same origin as opercule