powdery mildew
noun Date: 1889 1. an ascomycetous fungus (family Erysiphaceae) producing abundant powdery conidia on the host 2. a plant disease caused by a powdery mildew

New Collegiate Dictionary. 2001.

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  • Powdery mildew — is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of fungi in the order Erysiphales. It is one of the easier diseases to spot, as its symptoms are quite distinctive. Infected… …   Wikipedia

  • powdery mildew — Mildew Mil dew, n. [AS. melede[ a]w; akin to OHG. militou, G. mehlthau, mehltau; prob. orig. meaning, honeydew; cf. Goth. milip honey. See {Mellifluous}, and {Dew}.] (Bot.) A growth of minute powdery or webby fungi, whitish or of different colors …   The Collaborative International Dictionary of English

  • powdery mildew — ☆ powdery mildew n. 1. any of an order (Erysiphales) of ascomycetous fungi that are parasites on the surfaces of higher plants and produce closed fruiting bodies in a powdery mass 2. a plant disease caused by a powdery mildew …   English World dictionary

  • powdery mildew — 1. any of various parasitic fungi of the ascomycete order Erysiphales, which produce a powderlike film of mycelium on the surface of host plants. 2. Plant Pathol. a disease caused by powdery mildew, characterized by yellowing and death of the… …   Universalium

  • powdery mildew — pow′dery mil′dew n. 1) fng any of various fungi of the ascomycete order Erysiphales that produce a powderlike film of mycelium on the surface of host plants 2) ppa the plant disease caused by powdery mildew • Etymology: 1885–90, amer …   From formal English to slang

  • powdery mildew — noun any of various fungi of the genus Erysiphe producing powdery conidia on the host surface • Hypernyms: ↑mildew • Member Holonyms: ↑Erysiphe, ↑genus Erysiphe …   Useful english dictionary

  • powdery mildew — a mildew of the order Erysiphales …   Medical dictionary

  • Powdery mildew (barley) — Powdery mildew is a fungal disease of barley caused by Blumeria graminis f. sp. hordei . The disease has a worldwide distribution and is most damaging in cool, wet climates. The host range of the form species hordei is restricted to barley and… …   Wikipedia

  • Mildew — Mil dew, n. [AS. melede[ a]w; akin to OHG. militou, G. mehlthau, mehltau; prob. orig. meaning, honeydew; cf. Goth. milip honey. See {Mellifluous}, and {Dew}.] (Bot.) A growth of minute powdery or webby fungi, whitish or of different colors, found …   The Collaborative International Dictionary of English

  • mildew — [mil′do͞o΄, mil′dyo͞o΄] n. [ME mildewe < OE meledeaw, nectar, lit., honeydew, akin to Goth milith, honey < IE base * melit (> L mel, Gr meli, honey) + base of OE deaw,DEW] 1. a thin, furry, usually whitish coating or discoloration,… …   English World dictionary

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