Definitions

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

  • n. See élan vital.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The hypothetical principle that animates all living organisms
  • n. An impulse or influence that gives something life or vitality

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

  • n. (biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms

Etymologies

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