: the 22nd letter of the Greek alphabet see Alphabet Table
variants
or ch'i
or less commonly qi,
often Chi
: vital energy that is held to animate the body internally and is of central importance in some Eastern systems of medical treatment (such as acupuncture) and of exercise or self-defense (such as tai chi)
variant spelling of chi entry 2
: vital energy that is held to animate the body internally and is of central importance in some Eastern systems of medical treatment (such as acupuncture) and of exercise or self-defense (such as tai chi)
Cite this Entry
“Chi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chi. Accessed 5 Sep. 2026.
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