pathogenesisPronunciation: /ˌpaθə(ʊ)ˈdʒɛnɪsɪs/Definition of pathogenesis noun Medicine the manner of development of a disease. Derivatives pathogeneticPronunciation: /-dʒɪˈnɛtɪk/ adjective pathogenesis in other Oxford dictionaries Definition of pathogenesis in the US English dictionary