/ Dictionary / Index V viral: Meaning and Definition of Find definitions for: vi•ral Pronunciation: (vī'rul), [key] — adj. of, pertaining to, or caused by a virus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: viral (Thesaurus) virago Vira Saiva 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