/ Dictionary / Index M Mollier diagram: Meaning and Definition of Find definitions for: Mol'lier di'agram Pronunciation: (môl'yā), [key] — Thermodynam. Thermodynam. a graph showing the enthalpy of a substance as a function of its entropy when some physical property of the substance, as temperature or pressure, is kept at a specified constant value. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Mollie mollify Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language