/ Dictionary / Index C cube root: Meaning and Definition of Find definitions for: cube' root' Pronunciation: [key] — Math. Math. a quantity of which a given quantity is the cube: The cube root of 64 is 4. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cubeb cube steak Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language