Breadcrumb Home > Dictionary > Index A ASSR: Meaning and Definition of Find definitions for: ASSR Pronunciation: [key] Autonomous Soviet Socialist Republic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. assortment asst. ✖ Related Content Daily Word Quiz: quadrumanous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language