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clubroot

[kluhb-root, -roo t]
noun
  1. Plant Pathology. a disease of cabbage and other cruciferous plants, characterized by enlarged, malformed roots, caused by a slime mold, Plasmodiophora brassicae.
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Origin of clubroot

First recorded in 1840–50; club + root1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018