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Từ điển Oxford Learners Wordfinder Dictionary
conservation



noun
1. an occurrence of improvement by virtue of preventing loss or injury or other change (Freq. 2)
Syn:
preservation
Derivationally related forms:
conservationist, conserve
Hypernyms:
improvement, betterment, advance
2. the preservation and careful management of the environment and of natural resources (Freq. 1)
Derivationally related forms:
conservationist, conserve
Hypernyms:
preservation, saving
Hyponyms:
conservancy, soil conservation, oil conservation, water conservation
3. (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
Derivationally related forms:
conserve
Topics:
physics, natural philosophy
Hypernyms:
principle
Hyponyms:
conservation of charge, conservation of electricity, conservation of energy, law of conservation of energy, first law of thermodynamics,
conservation of mass, conservation of matter, law of conservation of mass, law of conservation of matter, conservation of momentum, parity,
conservation of parity, space-reflection symmetry, mirror symmetry

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