Breadcrumb Home > Dictionary > Index D Dalton's law: Meaning and Definition of Find definitions for: Dal'ton's law' Pronunciation: [key] — Physics, Chem. Physics,Chem. the law that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the gases of the mixture. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. daltonism Dalton System TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: saturnine Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language