Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

combustion

play
noun com·bus·tion \kəm-ˈbəs-chən\

Simple Definition of combustion

  • : the act of burning

  • : a chemical reaction that occurs when oxygen combines with other substances to produce heat and usually light

Full Definition of combustion

  1. 1 :  an act or instance of burning

  2. 2 :  a usually rapid chemical process (as oxidation) that produces heat and usually light; also :  a slower oxidation (as in the body)

  3. 3 :  violent agitation :  tumult

com·bus·tive play \-ˈbəs-tiv\ adjective

Examples of combustion

  1. Combustion may occur at high temperatures.

  2. This ratio of air to fuel results in better combustion.



15th Century

First Known Use of combustion

15th century



COMBUSTION Defined for Kids

combustion

play
noun com·bus·tion \kəm-ˈbəs-chən\

Definition of combustion

  1. :  the process of burning




Medical Dictionary

combustion

play
noun com·bus·tion \kəm-ˈbəs-chən\

Medical Definition of combustion

  1. :  a usually very rapid chemical process (as oxidation) that produces heat and usually light; also :  a slower oxidation (as in the body)





Seen and Heard

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

WORD OF THE DAY

February 10, 2016

to put in good humor

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

spindrift duvet pince-nez kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ