Operculum is valid Scrabble Word

Definitions for OPERCULUM in dictionary:

NOUN:
• an anatomical part that serves as a lid or cover, also OPERCELE, OPERCULE
• a structure that closes or covers an aperture.
• a part of the spore-containing capsule of a moss that functions as a lid or cover.
• The lid of a pitcherform leaf.
• The lid of the urnlike capsule of mosses.
• Any lidlike or operculiform process or part; as, the opercula of a dental follicle.
• The fold of integument, usually supported by bony plates, which protects the gills of most fishes and some amphibians; the gill cover; the gill lid.
• The principal opercular bone in the upper and posterior part of the gill cover.
• The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda.
• Any lid-shaped structure closing the aperture of a tube or shell.
• 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
• covering flap or structure in animals or plants
• a secreted plate that closes the aperture of a gastropod mollusc's shell when the animal is retracted.
OTHER DEFINITIONS:
• a body process or part that suggests a lid; as a horny or shelly plate on the posterior dorsal surface of the foot in many gastropod mollusks that closes the shell when the animal is retracted; the covering of the gills of a fish — see fish illustration
• covering flap or lidlike structure in animals or plants

Words related to OPERCULUM

opercula12 opercular13 operculums16

Words that contain OPERCULUM

operculums16 suboperculum20 suboperculums21

How to use OPERCULUM in a sentence

• Slowly and cautiously the horny operculum is pushed out, turned back, and hidden beneath a thick fleshy mantle, which spreads over half the shell.
• The distinct operculum in most of the figures would preclude their representing a shark.
• The capsule does not open by an operculum but by four or six longitudinal slits, which do not reach either the base or apex.
• These cleistocarpous forms are now recognized as related to various natural groups, in which the majority of the species possess an operculum.
• The former subdivision of the Bryales into Musci Cleistocarpi and Musci Stegocarpi according to the absence or presence of an operculum is thus clearly artificial.
• Operculum none ? Animal unknown, but certainly floating, and probably pteropodous.
• Veins or channels in the oral operculum, branching so as to resemble the antlers of a stag.
• The very peculiar markings on the operculum at once distinguish it.
• Limit of operculum entire, or obscurely bi-trilobed.

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