coma

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co·ma 1

 (kō′mə)
n. pl. co·mas
A state of deep, often prolonged unconsciousness, usually the result of injury, disease, or poison, in which an individual is incapable of sensing or responding to external stimuli and internal needs.

[Greek kōma, deep sleep.]

co·ma 2

 (kō′mə)
n. pl. co·mae (-mē)
1. Astronomy The nebulous luminescent cloud surrounding the nucleus of a comet and composed of material evaporated from the nucleus when the comet is near the perihelion of its orbit. The nucleus and coma together form the head of a comet.
2. Botany A usually terminal tuft or cluster, especially a tuft of hairs on a seed, as on a willow or milkweed seed.
3. Physics A diffuse, comet-shaped image of a point source of light or radiation caused by aberration in an optical system.

[Latin, hair, from Greek komē.]

co′mal adj.

coma

(ˈkəʊmə)
n, pl -mas
(Pathology) 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
[C17: from medical Latin, from Greek kōma heavy sleep; related to Greek koitē bed, perhaps to Middle Irish cuma grief]

coma

(ˈkəʊmə)
n, pl -mae (-miː)
1. (Astronomy) 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
2. (Botany) botany
a. a tuft of hairs attached to the seed coat of some seeds
b. the terminal crown of leaves of palms and moss stems
3. (General Physics) optics a type of lens defect characterized by the formation of a diffuse pear-shaped image from a point object
[C17: from Latin: hair of the head, from Greek komē]
ˈcomal adj

co•ma1

(ˈkoʊ mə)

n., pl. -mas.
a state of prolonged unconsciousness, including a lack of response to stimuli, from which it is impossible to rouse a person.
[1640–50; < Greek kôma deep sleep]

co•ma2

(ˈkoʊ mə)

n., pl. -mae (-mē).
1. the nebulous envelope around the nucleus of a comet.
2. a monochromatic aberration of a lens or other optical system in which the image from a point source cannot be focused.
3. a tuft of hairs on a seed or a terminal cluster of leaves or bracts, as on a stem.
[1660–70; < Latin: hair < Greek kómē]

co·ma 1

(kō′mə)
A state of deep unconsciousness resulting from disease or injury, from which a person cannot be aroused. A person in a coma usually is unable to respond to events taking place outside the body.

coma 2

The brightly shining cloud of gas that encircles the nucleus and makes up the major portion of the head of a comet that is near the sun.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.coma - a state of deep and often prolonged unconsciousness; usually the result of disease or injury
unconsciousness - a state lacking normal awareness of the self or environment
diabetic coma, Kussmaul's coma - coma that can develop in inadequately treated cases of diabetes mellitus
hepatic coma - coma that can occur in severe cases of liver disease
2.coma - (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds)
phytology, botany - the branch of biology that studies plants
tuft, tussock - a bunch of hair or feathers or growing grass
3.coma - (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
comet - (astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit
cloud - any collection of particles (e.g., smoke or dust) or gases that is visible

coma

noun unconsciousness, trance, oblivion, lethargy, stupor, torpor, somnolence, insensibility She had slipped into a coma by the time she reached the hospital.
Translations
غَيْبُوبَةغَيْبوبَه، فُقْدان الذّاكِرَه
kómabezvědomí
comakoma
koomatajuttomuuskoma
koma
kóma
昏睡
혼수
koma
koma
comă
kóma
koma
สภาพไม่รู้สึกตัวของผู้ป่วย
trạng thái hôn mê

coma

[ˈkəʊmə] Ncoma m
to be in a comaestar en (estado de) coma

coma

[ˈkəʊmə] ncoma m
to be in a coma → être dans le coma

coma

nKoma nt; to be in a comaim Koma liegen; to go or fall into a comains Koma fallen

coma

[ˈkəʊmə] n (Med) → coma m inv
to go into a coma → entrare in coma

coma

(ˈkoumə) noun
a long-continuing unconscious state. He was in a coma for several days after the accident.

coma

غَيْبُوبَة kóma koma Koma κώμα coma kooma coma koma coma 昏睡 혼수 coma koma śpiączka coma кома koma สภาพไม่รู้สึกตัวของผู้ป่วย koma trạng thái hôn mê 昏迷

coma

n coma m
References in periodicals archive ?
Subsequently, she wakes up in the body of a girl who had been in an irreversible coma.
Paylian said that he would consider it a victory to get patients breathing independently because it is one step above an irreversible coma.
In the second phase, the brain is affected, which leads to changes in sleeping patterns and insomnia followed by irreversible coma hence the name sleeping sickness.
The patient never regained consciousness and remained in an irreversible coma until she died 6 days later.
In summary, the criteria of the United States consist of four steps: (1) Prerequisites: definite and irreversible coma whose cause should be excluded drug, hypothermia, alcohol, and other laboratory abnormal values; (2) examination: absence of brainstem reflexes; (3) the apnea test result is positive; and (4) ancillary tests can be used when uncertain about the clinical examination or when the apnea test cannot be performed.
Sharon had slipped into an irreversible coma after a heart stroke in 2006.
Further, that as a result of the five-minute loss of proper oxygenation, Pamela suffered signiflicant brain damage, slipping into an irreversible coma.
intuitions in cerebrum transplant and irreversible coma cases.
They made the proclamation that life support could be withdrawn from patients with irreversible coma or brain death and provided the first criteria for diagnosing brain death [6].
Furthermore, living will and durable power of attorney statutes in many states reflect the compromise of principles that occurs in the legislative process and refer to particular medical conditions, like terminal illness or irreversible coma, and to nutrition and hydration as distinct from other treatment.
It was believed he had fallen into an irreversible coma - and his distraught family agreed it was time to let him go.
For 16 years in Italy, Beppino Englaro kept vigil at the bedside of his 37-year-old daughter Eleuna, another accident victim, as she lay in an irreversible coma.