Breadcrumb Home > Dictionary > Index P partial pressure: Meaning and Definition of Find definitions for: par'tial pres'sure Pronunciation: [key] — Physics, Chem. Physics,Chem. the pressure that a gas in a mixture of gases would exert if it occupied the same volume as the mixture at the same temperature. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. partial ordering partial score 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