gray mold

noun
variants: or less commonly gray mold rot

Definition of gray mold

1a : any of various fungal diseases of fruits, vegetables, or herbaceous plants characterized by a grayish color of the affected surfaces
b : a fungus causing such a disease (as members of the genera Botrytis and Cercospora)
2 : downy mildew of the grape

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Cite this Entry

“Gray mold.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gray%20mold. Accessed 3 Jul. 2022.

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