conservation

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conservation /ˌkɑːnsɚˈveɪʃən/ noun
conservation
/ˌkɑːnsɚˈveɪʃən/
noun
Learner's definition of CONSERVATION
[noncount]
: the protection of animals, plants, and natural resources
often used before another noun
: the careful use of natural resources (such as trees, oil, etc.) to prevent them from being lost or wasted
: the things that are done to keep works of art or things of historical importance in good condition