downy mildew

down·y mil·dew

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Definitions of downy mildew words

noun downy mildew Also called false mildew. any fungus of the family Peronosporaceae, causing many plant diseases and producing a white, downy mass of conidiophores, usually on the under surface of the leaves of the host plant. 1
noun downy mildew Plant Pathology. a disease of plants, characterized by mildewed, distorted, and yellowed foliage, caused by any of several fungi of the family Peronosporaceae, as of the genera Peronospora and Phytophthora. 1
noun downy mildew Botany 1
noun downy mildew a serious plant disease, characterized by yellowish patches on the undersurface of the leaves, caused by the parasitic fungi of the family Peronosporaceae, such as Peronospora destructor: affects onions, cauliflower, lettuce, etc 0
noun downy mildew any of the fungi causing this disease 0
noun downy mildew a disease of angiosperms characterized by the appearance of whitish or downy patches of fungus on the surfaces of plant parts, caused by various fungi (family Peronosporaceae) 0

before 1885

One of the 21% newest English words

First recorded in 1885-90

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This term is known only to a narrow circle of people with rare knowledge. Only 6% of English native speakers know the meaning of this word.

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