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
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