Posts tagged Critical Mass
What Is The MassPeace Project?
critical mass n. 1. The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level. 2. The amount of matter needed to generate sufficient gravitational force to halt the current expansion of the universe. 3. An amount or level needed for a specific result or new action to occur: “The sudden national uproar over drugs and drug abuse has reached politically critical mass in Washington” (Tom Morganthau).The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated More >






