/ Dictionary / Index G gradability: Meaning and Definition of Find definitions for: grad•a•bil•i•ty Pronunciation: (grā"du-bil'i-tē), [key] — n. Transp. a measure of a truck's pulling power expressed as the steepest grade the truck can climb with a full load. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grad gradable Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language