/ Dictionary / Index N nonviscous: Meaning and Definition of Find definitions for: non•vis•cous Pronunciation: (non-vis'kus), [key] — adj. inviscid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nonviolent nonvolatile Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language