Breadcrumb Home > Dictionary > Index A Avogadro's law: Meaning and Definition of Find definitions for: A'voga'dro's law' Pronunciation: [key] — Chem. Chem. the principle that equal volumes of all gases at the same temperature and pressure contain the same number of molecules. Thus, the molar volume of all ideal gases at 0° C and a pressure of 1 atm. is 22.4 liters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Avogadro Avogadro's number TrendingHere are the facts and trivia that people are buzzing about. The Book of Philippians: Summary Current Events This Week: May 2023 Preamble of the United Nations Charter Queen Victoria Books of the Bible: New Testament Books in Order The 88 Recognized Constellations ✖ Related Content Daily Word Quiz: shanghai Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language