Definition of oidium in English:
noun (plural oidia əʊˈɪdɪə)
2 [mass noun] A fungal disease affecting vines, caused by a powdery mildew.
- The fungus is Uncinula necator (formerly Oidium tuckeri), family Erysiphaceae, subdivision Ascomycotina
- The effects of phylloxera were first noted in France in 1863, just as the country was recovering from another great scourge of 19th century European viticulture: oidium, or powdery mildew, which was first noted in 1847.
Mid 19th century: modern Latin, from Greek ōion 'egg' + the diminutive suffix -idion.
Definition of oidium in:
- US English dictionary
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