- a disease of cabbages and related plants, caused by the fungus Plasmodiophora brassicae, in which the roots become thickened and distorted
WordReference Random House Unabridged Dictionary of American English © 2020
club•root (klub′ro̅o̅t′, -rŏŏt′),USA pronunciation n.
- Plant Diseasesa disease of cabbage and other cruciferous plants, characterized by enlarged, malformed roots, caused by a slime mold, Plasmodiophora brassicae.
- club + root1 1840–50
Collins Concise English Dictionary © HarperCollins Publishers::
club root n