/ Dictionary / Index M metal-free phthalocyanine: Meaning and Definition of Find definitions for: met'al-free phthalocy'anine Pronunciation: (met'l-frē"), [key] — Chem. Chem. phthalocyanine (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metalepsis metalhead Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language