IPA: //ˌsaɪtəʊpəˈθænədʒɪk//
KK: /sīˌtōpəˈthänəjik/
Relating to or causing disease in cells.
The cytopathogenic effects of the virus were evident under the microscope.
Cytopathogenic → It is formed from "cyto-" (from Greek "kytos", meaning cell) and "pathogenic" (from Greek "pathos", meaning disease or suffering, and "genes", meaning born of or produced by). The word describes something that causes disease in cells.
Think of 'cells' ('cyto-') that are 'produced by' ('genes') something that causes 'disease' ('pathos') — that's why cytopathogenic refers to something that causes disease in cells.