noun
fungus causing a downy mildew on growing tobacco
• Syn: ↑Peronospora hyoscyami
• Hypernyms: ↑downy mildew, ↑false mildew
• Member Holonyms: ↑Peronospora, ↑genus Peronospora
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noun : a disease of growing tobacco caused by a downy mildew (Peronospora hyoscyami); also : the fungus causing this disease
Useful english dictionary. 2012.