noun (1)
co·​ma | \ ˈkō-mə \

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


noun (2)
plural comae\ ˈkō-​ˌmē , -​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 \ 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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Time Traveler for coma

The first known use of coma was in 1646

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More Definitions for coma


co·​ma | \ ˈkō-mə \

Kids Definition of coma

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


co·​ma | \ ˈkō-mə \

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 Encyclopedia article about coma

Comments on coma

What made you want to look up coma? Please tell us where you read or heard it (including the quote, if possible).


a servile follower or underling

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