/ Dictionary / Index H Hesse-Nassau: Meaning and Definition of Find definitions for: Hesse-Nas•sau Pronunciation: (hes'nas'ô), [key] — n. a former state in W Germany, now part of Hesse. German, Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hesselman engine Hessian Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language