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club·rootor club root (clŭb′ro͞ot′, -ro͝ot′)
A disease of cabbage and related plants, caused by a parasitic protist (Plasmodiophora brassicae) and characterized by knobby or club-shaped swellings on the roots and wilting, yellowing, and stunted growth of aboveground parts.
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.
(Plant Pathology) a disease of cabbages and related plants, caused by the fungus Plasmodiophora brassicae, in which the roots become thickened and distorted
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a disease of plants of the cabbage family characterized by swollen roots, caused by a slime mold, Plasmodiophora brassicae.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.