Breadcrumb Home > Dictionary > Index R Cite RISC: Meaning and Definition of Find definitions for: RISC Pronunciation: (risk), [key] reduced instruction set computer: a computer whose central processing unit recognizes a relatively small number of instructions, which it can execute very rapidly. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: risc (Thesaurus) Rip Van Winkle rise TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News The Holocaust (1933–1945) Chinese New Year History, Meaning, and Celebrations Noble Titles and Ranks in a Monarchy The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: obviate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language