co·​ma | \ ˈkō-mə How to pronounce coma (audio) \

Definition of coma

 (Entry 1 of 2)

1 : a state of profound unconsciousness caused by disease, injury, or poison
2 : a state of mental or physical sluggishness : torpor
plural comae\ ˈkō-​ˌmē How to pronounce comae (audio) , -​ˌmī \

Definition of coma (Entry 2 of 2)

1 : a tufted bunch (as of branches, bracts, or seed hairs)
2 : the head of a comet consisting of a cloud of gas and dust and usually containing a nucleus
3 : an optical aberration in which the image of a point source is a comet-shaped blur

Other Words from coma

Noun (2)

comatic \ kō-​ˈma-​tik How to pronounce comatic (audio) \ adjective

First Known Use of coma

Noun (1)

1646, in the meaning defined at sense 1

Noun (2)

1669, in the meaning defined at sense 1

History and Etymology for coma

Noun (1)

New Latin, from Greek kōma deep sleep

Noun (2)

Latin, hair, from Greek komē

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Cite this Entry

“Coma.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/coma. Accessed 13 December 2019.

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More Definitions for coma

coma

noun
co·​ma | \ ˈkō-mə How to pronounce coma (audio) \

Kids Definition of coma

: a condition resembling deep sleep that is caused by sickness or injury

coma

noun
co·​ma | \ ˈkō-mə How to pronounce coma (audio) \

Medical Definition of coma

: a state of profound unconsciousness caused by disease, injury, or poison

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More from Merriam-Webster on coma

Rhyming Dictionary: Words that rhyme with coma

Spanish Central: Translation of coma

Nglish: Translation of coma for Spanish Speakers

Britannica English: Translation of coma for Arabic Speakers

Britannica.com: Encyclopedia article about coma

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