noun Plant Pathology.
a disease of plants, characterized by galls or knots on the roots and stunted growth, caused by any of several nematodes of the genus Meloidogyne.
Why Is The Word “Root” In “Root Beer”?Is root beer the world's most oddly named carbonated beverage ... we don't know, that award might go to 7-up, but we're going to explore the naming of this soft drink regardless. What, after all, is the root in root beer?
5 color words that are beautiful in more than one wayRead more in this article about some frequently asked questions and fun facts related to our definitions.
- root filament,
- root for,
- root ginger,
- root graft,
- root hair,
- root mean square,
- root nodule,
- root of lung,
- root of nail,
- root of penis
Origin of root knot
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for root knot
On light, sandy soils a fairly good crop may be made, but on such soils, wilt and root-knot are dangerous foes.Agriculture for Beginners|Charles William Burkett
A disease of plants characterized by protuberant swellings on the roots caused by infestation with nematodes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.