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English definition of “science”

science

noun [C/U]    /ˈsɑɪ·əns/
the systematic study of the structure and behavior of the natural and physical world , or knowledge obtained about the world by watching it carefully and experimenting : [U] Advances in medical science mean that people are living longer . [U] She shows a talent for math and science. Sciences are also particular areas of science, such as biology , chemistry , and physics . Science also refers to subjects which are studied like a science: [U] political / computer science
(Definition of science noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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