/ Dictionary / Index P pyrocatechol: Meaning and Definition of Find definitions for: py•ro•cat•e•chol Pronunciation: (pī"ru-kat'i-chôl", -chol", -kôl", -kol"), [key] — n. Chem. catechol. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pyroborate pyrocellulose 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