1

coma

play
noun co·ma \ ˈkō-mə \

Definition of coma

1 :a state of profound unconsciousness caused by disease, injury, or poison
2 :a state of mental or physical sluggishness :torpor

Origin and Etymology of coma

New Latin, from Greek kōma deep sleep


2

coma

noun

Definition of coma

plural comae play \ˈkō-ˌmē, -ˌmī\
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

comatic

play \kō-ˈma-tik\ adjective

Origin and Etymology of coma

Latin, hair, from Greek komē


COMA Defined for Kids

coma

play
noun co·ma \ ˈkō-mə \

Definition of coma for Students

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

Medical Dictionary

coma

play
noun co·ma \ ˈkō-mə \

medical Definition of coma

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


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

alert quickness of mind or body

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!