• (n.) The generation, and method of development, of disease; as, the pathogeny of yellow fever is unsettled. • (n.) That branch of pathology which treats of the generation and development of disease.
Pa·thog'e·ny noun (Medicine) (a) The generation, and method of development, of disease; as, the pathogeny of yellow fever is unsettled. (b) That branch of pathology which treats of the generation and development of disease. 
Type: Term Pronunciation: pă-thoj′ĕ-nē Definitions: 1. Rarely used synonym for pathogenesis.
pathogeny, pathogenetic, pathogenic, pathogenous The development of morbid conditions or of a disease.