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collar rot

American  

noun

Plant Pathology.

  1. a disease of plants, characterized by cankers that girdle the stem, caused by any of several fungi, as Alternaria solani.

Etymology

Origin of collar rot

First recorded in 1950–55

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.

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