oidium
/əʊˈɪdɪəm/noun
(pl. oidia /-ɪə/)
1
- Botany a type of fungal spore (conidium) formed by the breaking up of fungal hyphae into cells, especially as produced by powdery mildews【植】粉孢子。
2
- mass noun a fungal disease affecting vines, caused by a powdery mildew（葡萄）白粉病。
2.1
- The fungus is Uncinula necator (formerly Oidium tuckeri), family Erysiphaceae, subdivision Ascomycotina.这种菌类是葡萄钩丝壳菌（拉丁名Uncinula necator,曾名为Oidium tucker）, 白粉菌科, 子囊菌亚门。
词源
mid 19th cent.: modern Latin, from Greek ōion 'egg' + the diminutive suffix -idion.