/ Dictionary / Index A accelerative: Meaning and Definition of Find definitions for: ac•cel•er•a•tive Pronunciation: (ak-sel'u-rā"tiv, -ur-u-tiv), [key] — adj. tending to accelerate; increasing the velocity of. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: accelerative (Thesaurus) acceleration principle accelerator Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language