| conservation | the preservation and careful management of the environment and of natural resources |
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| conservation | (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations |
| conservation | an occurrence of improvement by virtue of preventing loss or injury or other change |
| conservation | the principle that the total electric charge of a system remains constant despite changes inside the system |
| conservation | the principle that the total electric charge of a system remains constant despite changes inside the system |
| conservation | the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes |
| conservation | a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system |
| conservation | a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system |
| conservation | the principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system |
| conservation | (physics) parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system |
| conservation | someone who works to protect the environment from destruction or pollution |