/ Dictionary / Index P pyroracemic acid: Meaning and Definition of Find definitions for: py'ro•ra•ce'mic ac'id Pronunciation: (pī'rō-rā-sē'mik, -sem'ik, -rō-ru-, pī"rō-), [key] — Chem. Chem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pyrophyllite pyrosis Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language