from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Releasing heat: an exothermic reaction.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. That releases energy in the form of heat.
  • adj. That releases heat during its formation, and absorbs it during its decomposition
  • adj. Of an animal whose body temperature is regulated by external factors; cold-blooded

from the GNU version of the Collaborative International Dictionary of English

  • adj. Characterized by, or formed with, evolution of heat; ; -- opposed to endothermic.

from The Century Dictionary and Cyclopedia

  • Relating to a liberation of heat.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. (of a chemical reaction or compound) occurring or formed with the liberation of heat


from Wiktionary, Creative Commons Attribution/Share-Alike License

From exo- "outside" + thermic "of heat"



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