Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of opercula is as below...

Preopercular :: Preopercular (n.) The preoperculum.

Aptychus :: Aptychus (n.) A shelly plate found in the terminal chambers of ammonite shells. Some authors consider them to be jaws; others, opercula..

Operculated :: Operculated (a.) Having an operculum, or an apparatus for protecting the gills; -- said of shells and of fishes..

Interoperculum :: Interoperculum (n.) The postero-inferior opercular bone, in fishes..

Unoperculated :: Unoperculated (a.) Destitute of an operculum, or cover..

Inoperculate :: Inoperculate (a.) Having no operculum; -- said of certain gastropod shells.

Inopercular :: Inopercular (a.) Alt. of Inoperculat.

Preoperculum :: Preoperculum (n.) The anterior opercular bone in fishes.

Suboperculum :: Subopercular (n.) The suboperculum.

Interpercular :: Interpercular (n.) The interopercular bone.

Opercular :: Opercular (n.) The principal opercular bone or operculum of fishes.

Operculum :: Operculum (n.) The principal opercular bone in the upper and posterior part of the gill cover.

Operculate :: Operculate (a.) Alt. of Operculate.

Suborbicular :: Suboperculum (n.) The lower opercular bone in fishes.

Operculum :: Operculum (n.) Any lidlike or operculiform process or part; as, the opercula of a dental follicle..

Opercula :: Opercula (n. pl.) See Operculum.

Pomacentroid :: Pomacentroid (a.) Pertaining to the Pomacentridae, a family of bright-colored tropical fishes having spiny opercula; -- often called coral fishes..

Paludina :: Paludina (n.) Any one of numerous species of freshwater pectinibranchiate mollusks, belonging to Paludina, Melantho, and allied genera. They have an operculated shell which is usually green, often with brown bands. See Illust. of Pond snail, under Pond..

Multispiral :: Multispiral (a.) Having numerous spiral coils round a center or nucleus; -- said of the opercula of certain shells.

Subopercular :: Subopercular (a.) Situated below the operculum; pertaining to the suboperculum.

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