/ Dictionary / Index M Matthiessen: Meaning and Definition of Find definitions for: Mat•thies•sen Pronunciation: (math'u-sun), [key] born 1927, U.S. novelist and travel writer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Matthias matting Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language