Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

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

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

  • noun (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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