Plural of chi; the twenty-second letter of the Greek alphabet (Χ, χ), or the Chinese concept of life force.
From Greek chi, the name of the Greek letter. Can also refer to the Chinese concept of qi or chi (life energy). Multiple forms exist as both cultures influenced English.
Chi is fascinating because the same word means something completely different in Greek and Chinese—the Greek letter chi (Χ) looks like an X, while Chinese chi describes the invisible vital energy that martial artists and healers try to cultivate!
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