/ Dictionary / Index D disassortative mating: Meaning and Definition of Find definitions for: dis•as•sort'a•tive mat'ing Pronunciation: (dis"u-sôr'tu-tiv), [key] — Animal Behav., Psychol. Animal Behav.,Psychol. the reproductive pairing of individuals that have traits more dissimilar than would likely be the case if mating were random (contrasted with assortative mating). Cf. panmixia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. disassociate disaster Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language