Advertisement
Advertisement
coma
1[koh-muh]
noun
plural
comasa state of prolonged unconsciousness, including a lack of response to stimuli, from which it is impossible to rouse a person.
coma
2[koh-muh]
noun
plural
comaeAstronomy.the nebulous envelope around the nucleus of a comet.
Optics.a monochromatic aberration of a lens or other optical system in which the image from a point source cannot be brought into focus, the image of a point having the shape of a comet.
Botany.
a tuft of silky hairs at the end of a seed.
the leafy crown of a tree; cluster of leaves at the end of a stem.
a terminal cluster of bracts, as in the pineapple.
coma
1/ ˈəʊə /
noun
a state of unconsciousness from which a person cannot be aroused, caused by injury to the head, rupture of cerebral blood vessels, narcotics, poisons, etc
coma
2/ ˈəʊə /
noun
astronomy the luminous cloud surrounding the frozen solid nucleus in the head of a comet, formed by vaporization of part of the nucleus when the comet is close to the sun
botany
a tuft of hairs attached to the seed coat of some seeds
the terminal crown of leaves of palms and moss stems
optics a type of lens defect characterized by the formation of a diffuse pear-shaped image from a point object
coma
1plural
comasA state of deep unconsciousness, usually resulting from brain trauma or metabolic disease, in which an individual is incapable of sensing or responding to external stimuli.
coma
2plural
comaeAstronomyThe brightly shining cloud of gas that encircles the nucleus and makes up the major portion of the head of a comet near the Sun. As a comet moves along its orbit away from the Sun, the gas and dust of the coma dissipate, leaving only the nucleus. A coma can have a diameter of up to 100,000 km (62,000 mi.).
AstronomySee more at comet
PhysicsA diffuse, comet-shaped image of a point source of light or radiation caused by aberration in a lens or mirror. The image appears progressively elongated with distance from the center of the field of view.
coma
An abnormal state of deep unconsciousness. A coma may occur as the result of trauma to the head, disease (such as meningitis, stroke, or diabetes mellitus), or poisoning.
Other 51Թ Forms
- ˈdz adjective
51Թ History and Origins
Origin of coma1
Origin of coma2
51Թ History and Origins
Origin of coma1
Origin of coma2
Example Sentences
He had consumed so much alcohol that it had put him in a coma for days.
At the roadside he suffered the first of three seizures that led to him being placed in an induced coma for 24 hours.
The siblings’ parents were both rescued but the father remains in a coma, officials said.
A woman was left in a coma after a chaotic incident at the Montecito mansion of Beanie Babies billionaire Ty Warner last week that officials said involved a violent break-in and an attempted kidnapping.
Some left-wingers wanted to toughen the government's bill by widening access to assisted dying to minors, non-French nationals and patients who leave instructions before going into a coma.
Advertisement
Advertisement
Advertisement
Advertisement
Advertisement
Browse