/ Dictionary / Index F ferromolybdenum: Meaning and Definition of Find definitions for: fer•ro•mo•lyb•de•num Pronunciation: (fer"ō-mu-lib'du-num, -mol"ib-dē'-), [key] — n. a ferroalloy containing up to 60 percent molybdenum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ferromanganese ferronickel Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language