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...

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

Suboperculum :: Subopercular (n.) The suboperculum.

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

Quin :: Quin (n.) A European scallop (Pecten opercularis), used as food..

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

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..

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

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

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

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

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

Preopercular :: Preopercular (a.) Situated in front of the operculum; pertaining to the preoperculum.

Preopercular :: Preopercular (n.) The preoperculum.

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

Piper :: Piper (n.) A common European gurnard (Trigla lyra), having a large head, with prominent nasal projection, and with large, sharp, opercular spines..

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

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

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

Opercle :: Opercle (n.) Any one of the bony plates which support the gill covers of fishes; an opercular bone.

Opercula :: Opercula (pl. ) of Operculu.

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