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pathophysiology. noun. 1  The functional changes associated with or resulting from disease or injury. 2  The scientific study of such changes. 3  In both senses also called physiopathology.
Definition of Pathology. Pathology: The study of disease. The word pathology comes from the Greek words pathos meaning disease and logos meaning a treatise = a treatise of disease. The word pathology is sometimes misused to mean disease as, for example, he didn't find any pathology (meaning he found no evidence of disease). A medical doctor that specializes in pathology is called a pathologist. Pathologists are experts at interpreting microscopic views of body tissues.