Definition of coma

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Coma (n.) The envelope of a comet; a nebulous covering, which surrounds the nucleus or body of a comet..

Lern More About Coma

Sarcoma :: Sarcoma (n.) A tumor of fleshy consistence; -- formerly applied to many varieties of tumor, now restricted to a variety of malignant growth made up of cells resembling those of fetal development without any proper intercellular substance..
Narcotic :: Narcotic (n.) A drug which, in medicinal doses, generally allays morbid susceptibility, relieves pain, and produces sleep; but which, in poisonous doses, produces stupor, coma, or convulsions, and, when given in sufficient quantity, causes death. The best examples are opium (with morphine), belladonna (with atropine), and conium..
Comatose :: Comatose (a.) Relating to, or resembling, coma; drowsy; lethargic; as, comatose sleep; comatose fever..
Pentacrinoid :: Pentacrinoid (n.) An immature comatula when it is still attached by a stem, and thus resembles a Pentacrinus..
Ptomaine :: Ptomaine (n.) One of a class of animal bases or alkaloids formed in the putrefaction of various kinds of albuminous matter, and closely related to the vegetable alkaloids; a cadaveric poison. The ptomaines, as a class, have their origin in dead matter, by which they are to be distinguished from the leucomaines..
Planet :: Planet (n.) A celestial body which revolves about the sun in an orbit of a moderate degree of eccentricity. It is distinguished from a comet by the absence of a coma, and by having a less eccentric orbit. See Solar system..
Glaucoma :: Glaucoma (n.) Dimness or abolition of sight, with a diminution of transparency, a bluish or greenish tinge of the refracting media of the eye, and a hard inelastic condition of the eyeball, with marked increase of tension within the eyeball..
Albugo :: Albugo (n.) Same as Leucoma.
Coma :: Coma (n.) A tuft or bunch, -- as the assemblage of branches forming the head of a tree; or a cluster of bracts when empty and terminating the inflorescence of a plant; or a tuft of long hairs on certain seeds..
Osteosarcoma :: Osteosarcoma (n.) A tumor having the structure of a sacroma in which there is a deposit of bone; sarcoma connected with bone.
Carus :: Carus (n.) Coma with complete insensibility; deep lethargy.
Comet :: Comet (n.) A member of the solar system which usually moves in an elongated orbit, approaching very near to the sun in its perihelion, and receding to a very great distance from it at its aphelion. A comet commonly consists of three parts: the nucleus, the envelope, or coma, and the tail; but one or more of these parts is frequently wanting. See Illustration in Appendix..
Revive :: Revive (v. i.) To raise from coma, languor, depression, or discouragement; to bring into action after a suspension..
Leucoma :: Leucoma (n.) A white opacity in the cornea of the eye; -- called also albugo.
Anthracomancy :: Anthracomancy (n.) Divination by inspecting a burning coal.
Sarcomas :: sarcomas (pl. ) of Sarcom.
Neuroskeleton :: Neuroskeleton (n.) The deep-seated parts of the vertebrate skeleton which are relation with the nervous axis and locomation.
Comanches :: Comanches (n. pl.) A warlike, savage, and nomadic tribe of the Shoshone family of Indians, inhabiting Mexico and the adjacent parts of the United States; -- called also Paducahs. They are noted for plundering and cruelty..
Comatula :: Comatula (n.) A crinoid of the genus Antedon and related genera. When young they are fixed by a stem. When adult they become detached and cling to seaweeds, etc., by their dorsal cirri; -- called also feather stars..
Mytilotoxine :: Mytilotoxine (n.) A poisonous base (leucomaine) found in the common mussel. It either causes paralysis of the muscles, or gives rise to convulsions, including death by an accumulation of carbonic acid in the blood..
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