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English definition of “chi”

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chi noun (energy)

[U] medical   /tʃiː/   ( or qi) in some systems of Chinese medicine and exercise, the most important energy that a person has

chi noun (letter)

[C or U] language, mathematics, science the 22nd letter of the Greek alphabet
(Definition of chi from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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