SigatokaPronunciation: /ˌsɪgəˈtəʊkə/Definition of Sigatoka noun [mass noun] a fungal disease of banana plants characterized by elongated spots on the leaves, which then rot completely. The fungus is Mycosphaerella musicola, subdivision Ascomycotina Origin: 1920s: named after a district in FijiSigatoka in other Oxford dictionaries Definition of Sigatoka in the US English dictionary