/ Dictionary / Index N nickelic oxide: Meaning and Definition of Find definitions for: nickel'ic ox'ide Pronunciation: [key] — Chem. Chem. a gray-black, water-insoluble powder, NiO, which, at 600°C, decomposes to nickel oxide: used chiefly in storage batteries as an oxidizing agent. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nickelic nickeliferous 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