black root rot
Americannoun
Plant Pathology.
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any of several diseases of plants characterized by black or brown lesions on the root.
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a common disease of the apple caused by the fungus Xylaria mali.
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a disease of tobacco caused by the fungus Thielaviopsis basicola and characterized by retarded growth and wilting.
Etymology
Origin of black root rot
First recorded in 1905–10
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
