chi

/tʃiː/
noun
  1. The 22nd letter of the Greek alphabet (Χ, χ).
    • In math class, we used chi to represent a variable.
    • The Greek letter chi looks like an X.
    • Chi is often used in statistics for the chi-squared test.
  2. The vital life force or energy in traditional Chinese philosophy and medicine (also spelled qi).
    • She practices qigong to strengthen her chi.
    • Practitioners of tai chi believe it helps balance the body's chi.
    • Acupuncture is said to unblock the flow of chi.
Synonyms
What does "chi" mean? | whatsthatwordmean | whatsthatwordmean