/ Dictionary / Index C chi-square: Meaning and Definition of Find definitions for: chi-square Pronunciation: (kī'skwâr"), [key] — n. Statistics. a quantity equal to the summation over all variables of the quotient of the square of the difference between the observed and expected values divided by the expected value of the variable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Chişinău chi-square test Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language