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1the scientific study of animals or plants, especially as concerned with observation rather than experiment, and presented in popular form.
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the study of the whole natural world, including mineralogy and palaeontology.
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natural phenomena which are the subject of scientific observation: the area has an abundance of wildlife and natural history
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2 Medicine the usual course of development of a disease or condition, especially in the absence of treatment: the natural history of cervical cancer among older women
