noun
fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves
• Syn: ↑Peronospora tabacina
• Hypernyms: ↑downy mildew, ↑false mildew
• Member Holonyms: ↑Peronospora, ↑genus Peronospora
Useful english dictionary. 2012.