noun Physics, Chemistry.
any law stating that some quantity or property remains constant during and after an interaction or process, as conservation of charge or conservation of linear momentum.
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Origin of conservation law
First recorded in 1945–50
Words nearby conservation law
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for conservation law
Any of various principles, such as the conservation of charge and the conservation of energy, that require some measurable property of a closed system to remain constant as the system changes. Conservation laws can be directly related to principles of symmetry. See also invariance Noether's theorem.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.