Breadcrumb Home > Dictionary > Index P pure reason: Meaning and Definition of Find definitions for: pure' rea'son Pronunciation: [key] — Kantianism. Kantianism. reason based on a priori principles and providing a unifying ground for the perception of the phenomenal world. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. purely purfle 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: irascible Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language