/ Dictionary / Index N nickelous: Meaning and Definition of Find definitions for: nick•el•ous Pronunciation: (nik'u-lus), [key] — adj. Chem. containing bivalent nickel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nickelodeon nickel oxide Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language