/ Dictionary / Index M Manganin: Meaning and Definition of Find definitions for: Man•ga•nin Pronunciation: (mang'gu-nin), [key] — Trademark. Trademark. a brand name for an alloy of copper, manganese, and nickel, having various electrical applications. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. manganiferous manganite Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language