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natural language
natural language processing
natural law
natural light
natural logarithm
natural medicine
natural monopoly
natural number
natural philosophy
natural rate of unemployment
natural resource
Natural Resources Canada
natural scale
natural science
natural selection
natural slope
Natural State
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natural philosophy
nat·u·ral phi·los·o·phy


noun 
Definition:
 
scientific study of nature: the study of nature and natural phenomena ( archaic )

Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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