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Definition of: epidemiology
(ep′ə·dē′mē·ol′ə·jē, -dem′ē-) noun
That branch of medicine which treats of the origin, nature, pathology, and prevention of epidemic diseases.
—ep′i·de′mi·o·log′ic (-dē′·mē·ə·loj′ik) or ·i·cal adjective
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