/ Dictionary / Index P phthiocol: Meaning and Definition of Find definitions for: phthi•o•col Pronunciation: (thī'u-kôl", -kol"), [key] — n. Biochem. a yellow crystalline substance, CHO, produced by the human tubercle bacillus, Mycobacterium tuberculosis, having antibiotic and blood-clotting properties. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phthalocyanine green phthiriasis Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language