Breadcrumb Home > Dictionary > Index P Pyridium: Meaning and Definition of Find definitions for: Py•rid•i•um Pronunciation: (pī-rid'ē-um, pi-), [key] — Pharm., Trademark. Pharm.,Trademark. a brand of phenazopyridine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pyridium (Thesaurus) pyridine pyridostigmine bromide TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: pernicious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language