Breadcrumb Home > Dictionary > Index F free expansion: Meaning and Definition of Find definitions for: free' expan'sion Pronunciation: [key] — Thermodynamics. Thermodynamics. the expansion of a gas into an evacuated space without the transfer of heat or the performance of work. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. free enterpriser free fall 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: absquatulate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language