definitions

blue mold

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noun

Also called green mold. any fungus of the genus Penicillium, which forms a bluish-green, furry coating on foodstuffs inoculated by its spores.
Plant Pathology.
  1. a disease of plants, characterized by necrosis of leaves or fruit and the growth of bluish or grayish mold on affected parts, caused by any of several fungi, as of the genus Penicillium or Peronospora tabacina.
  2. downy mildew(def 2).

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Nearby words

blue marlin, blue mass, blue melilot, blue merle, blue mockingbird, blue mold, blue monday, blue moon, blue mould, blue mountains, blue mud

Origin of blue mold

First recorded in 1655–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for blue mold

  • You and your wife Joanna may stagnate here till you blue-mold, for me.

    The Midnight Queen|May Agnes Fleming