Coma



[koh-muh] /ˈkoʊ mə/

noun, plural comas.
1.
a state of prolonged unconsciousness, including a lack of response to stimuli, from which it is impossible to rouse a person.
[koh-muh] /ˈkoʊ mə/
noun, plural comae
[koh-mee] /ˈkoʊ mi/ (Show IPA)
1.
Astronomy. the nebulous envelope around the nucleus of a comet.
2.
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.
3.
Botany.

/ˈkəʊmə/
noun (pl) -mas
1.
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
/ˈkəʊmə/
noun (pl) -mae (-miː)
1.
(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)

3.
(optics) a type of lens defect characterized by the formation of a diffuse pear-shaped image from a point object
n.

state of prolonged unconsciousness, 1640s, from Latinized form of Greek koma (genitive komatos) “deep sleep,” of uncertain origin.

“head of a comet,” 1765, from Latin coma, from Greek kome “hair of the head,” of unknown origin. Earlier in English as a botanical term for a tuft of hairs (1660s).

coma co·ma (kō’mə)
n.
A state of profound unconsciousness in which an individual is incapable of sensing or responding to external stimuli.
coma 1
(kō’mə)
Plural comas
A 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 2
(kō’mə)
Plural comae (kō’mē)

coma [(koh-muh)]

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.

Tagged:

Read Also:

  • Coma aberration

    coma aberration n. The distortion in image formation occurring when a bundle of light rays enters an optical system that is not parallel to the optic axis.

  • Comaker

    [koh-mey-ker, koh-mey-ker] /koʊˈmeɪ kər, ˈkoʊˌmeɪ kər/ noun, Finance. 1. a person who formally undertakes to discharge the duties of the of an instrument, especially a promissory note, in the event of the default.



  • Coma-berenices

    [koh-muh ber-uh-nahy-seez] /ˈkoʊ mə ˌbɛr əˈnaɪ siz/ noun, genitive Comae Berenices [koh-mee ber-uh-nahy-seez] /ˈkoʊ mi ˌbɛr əˈnaɪ siz/ (Show IPA). Astronomy. 1. Berenice’s Hair, a northern constellation situated north of Virgo and between Boötes and Leo. /ˈkəʊmə ˌbɛrɪˈnaɪsiːz/ noun (Latin genitive) Comae Berenices (ˈkəʊmiː) 1. a faint constellation in the N hemisphere between Ursa Major […]

  • Comal

    [koh-mahl; Spanish kaw-mahl] /koʊˈmɑl; Spanish kɔˈmɑl/ noun, plural comals Spanish, comales [kaw-mah-les] /kɔˈmɑ lɛs/ (Show IPA) 1. a griddle made from sandstone or earthenware. COMmon Algorithmic Language



Disclaimer: Coma definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.