conservation of mass
Date: 1884 a principle in classical physics: the total mass of any isolated material system is neither increased nor diminished by reactions between the parts — called also conservation of matter

New Collegiate Dictionary. 2001.

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  • conservation of mass — n a principle in classical physics: the total mass of any material system is neither increased nor diminished by reactions between the parts called also conservation of matter, law of conservation of matter …   Medical dictionary

  • Conservation of mass — The law of conservation of mass, also known as the principle of mass/matter conservation, states that the mass of an isolated system (closed to all matter and energy) will remain constant over time. This principle is equivalent to the… …   Wikipedia

  • conservation of mass — Physics. the principle that in any closed system subjected to no external forces, the mass is constant irrespective of its changes in form; the principle that matter cannot be created or destroyed. Also called law of conservation of mass,… …   Universalium

  • conservation of mass — conserva′tion of mass′ n. phs the principle that in a system not subject to any external force, the mass is constant despite its changes in form Also called conserva′tion of mat′ter. Etymology: 1880–85 …   From formal English to slang

  • conservation of mass — noun A conservation law of classical physics that states that the total mass of a closed system remains constant regardless of the chemical or physical changes that take place within it …   Wiktionary

  • law of conservation of mass — Physics. See conservation of mass. * * * …   Universalium

  • law of conservation of mass — mass (or matter) can be neither created nor destroyed; this law can be violated on the microscopic level …   Medical dictionary

  • law of conservation of mass — basic law of nature which claims that mass is neither created nor wasted but rather changes form …   English contemporary dictionary

  • conservation of matter — n. the principle that matter is neither created nor destroyed during any physical or chemical change: also conservation of mass * * * …   Universalium

  • Conservation of energy — This article is about the law of conservation of GPE in physics. For sustainable energy resources, see Energy conservation. Prof. Walter Lewin demonstrates the conservation of mechanical energy, touching a wrecking ball with his jaw. (MIT Course… …   Wikipedia

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