/ Dictionary / Index M molybdenous: Meaning and Definition of Find definitions for: mo•lyb•de•nous Pronunciation: (mu-lib'du-nus), [key] — adj. Chem. containing bivalent molybdenum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. molybdenosis molybdenum Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language