/ Dictionary / Index C chi-square test: Meaning and Definition of Find definitions for: chi'-square test" Pronunciation: (kī'skwârd"). [key] — Statistics. Statistics. a test devised by Karl Pearson that uses the quantity chi-square for testing the mathematical fit of a frequency curve to an observed frequency distribution. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chi-square chit 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