/ Dictionary / Index M merchant seaman: Meaning and Definition of Find definitions for: mer'chant sea'man Pronunciation: [key] a seaman who works on a merchant vessel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. merchant prince merci* Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language