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

  • adj. Releasing energy.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Releasing energy (especially as heat)

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

  • adj. (biochemistry) of a process accompanied by the release of energy


ex(o)- + Greek ergon, work; see werg- in Indo-European roots + -ic.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • The systems considered above are what biochemists call "exergonic", they are fully spontaneous processes.

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