/ Dictionary / Index R reovirus: Meaning and Definition of Find definitions for: re•o•vi•rus Pronunciation: (rē"ō-vī'rus, rē'ō-vī"-), [key] — pl. -rus•es. any large virus of the family Reoviridae, having double-stranded RNA and a polyhedral capsid, including those causing infantile gastroenteritis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: reovirus (Thesaurus) reorientation rep Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language