/ Dictionary / Index M morpholine: Meaning and Definition of Find definitions for: mor•pho•line Pronunciation: (môr'fu-lēn", -lin), [key] — n. Chem. a colorless, hygroscopic liquid, CHNO, used chiefly as a solvent for dyes, resins, and waxes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. morphol. morphologic construction Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language