/ Dictionary / Index G greatest-integer function: Meaning and Definition of Find definitions for: great'est-in'te•ger func"tion Pronunciation: (grā'tist-in'ti-jur), [key] the function that assigns to each real number the greatest integer less than or equal to the number. Symbol: [x] Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. greatest common divisor greatest lower bound Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language