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Related to root rot: Armillaria root rot
Any of several plant diseases caused by oomycetes or fungi and characterized by rotting of the roots and often by yellowing or wilting of the leaves.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.