root knot

noun

Plant Pathology.

1. 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.

root knot

1. A disease of plants characterized by protuberant swellings on the roots caused by infestation with nematodes.

Word History and Origins

Origin of root knot¹

First recorded in 1885–90

Example Sentences

Root Knot Disease of the Peach, Orange, and other Plants in Florida, due to the Work of Anguillula.

From Project Gutenberg

Root′-knot, an abnormal knot of a root.—adj.

From Project Gutenberg

In digging out some old peach trees, I find now and then a tree affected with root knot.

From Project Gutenberg