(in traditional Chinese medicine and philosophy) the vital life force that flows through the body and is supposedly regulated by acupuncture.
Also Wade-Giles, chi.
Origin of qi
From the Chinese word qì breath
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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So now you know your Scrabblish AA, BO, QIS, next time won't you sing with MI?National Scrabble Day: A Poem So You’ll Know All 101 Two-Letter Words
April 13, 2013
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
"physical life force," 1850, from Chinese qi "air, breath."
Online Etymology Dictionary, © 2010 Douglas Harper