Chi or X is often used to abbreviate the name Christ, as in the holiday Christmas (Xmas). When fused within a single typeface with the Greek letter rho, it is called the Chi Rho and used to …

: 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 …

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Jul 8, 2025 · Chi (noun): A short form for "Chicago," commonly used in informal speech or writing. The word "chi" carries diverse meanings, spanning cultural, philosophical, linguistic, and …

Dec 22, 2025 · Chi energy, or qi, represents the life force energy or bioelectrical energy inherent in the human body. Chi translates as air or breath, but it’s also used to represent energy, vital …

Chi-squared distribution, showing χ2 on the first axis and p -value (right tail probability) on the second axis. A chi-squared test (also chi-square or χ2 test) is a statistical hypothesis test used …

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