/ Dictionary / Index A assimilative: Meaning and Definition of Find definitions for: as•sim•i•la•tive Pronunciation: (u-sim'u-lā"tiv, -lu-tiv), [key] — adj. characterized by assimilation; assimilating. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: assimilative (Thesaurus) assimilationism Assiniboin Related Content Daily Word Quiz: sylvan Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language