chi /t͡ʃiː/noun 3/t͡ʃə/ noun 4/kaɪ/ noun 1forms 2 noun3 •a power that, in old Chinese thought and medicine, moves through the body and keeps it aliveHe took several deep breaths, finding his chi as Butler had taught him. — 2001 •Clipping of chihuahua. •(informal) Clipping of Chihuahua. chi /t͡ʃə/ noun4 •The Chinese foot, a traditional Chinese unit of length based on the human forearm. •The Chinese unit of length standardized in 1984 as ¹/₃ of a meter. •The Taiwanese unit of length standardized as ¹⁰/₃₃ of a meter, identical to the Japanese shaku. •(Hong-Kong) The chek or Hong Kong foot, a unit of length standardized as 0.371475 meters. chi /kaɪ/ noun1 •The twenty-second letter of the Classical and Modern Greek alphabets. formsChis · chis