/ Dictionary / Index M MIDN: Meaning and Definition of Find definitions for: MIDN Pronunciation: [key] Midshipman. Midn. Pronunciation: [key] Midshipman. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. midmost midnight Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language