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vitality, life force, vital force, elan vital, qi, élan vital | [in 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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chi, qi, ch'i, ki | the circulating life energy that in Chinese philosophy is thought to be inherent in all things; in traditional Chinese medicine the balance of negative and positive forms in the body is believed to be essential for good health |