root knot


: a plant disease caused by nematodes that produce enlargements on the roots and stunt the growth of the plant

Examples of root knot in a Sentence

Recent Examples on the Web Looking for varieties that resist root knot nematode or verticillium wilt or early blight or other issues? Nan Sterman, San Diego Union-Tribune, 1 Apr. 2023 Sadly, adding soil won’t stop root knot nematodes, a parasitic roundworm. Nan Sterman, San Diego Union-Tribune, 2 Apr. 2022 The plants have likely accumulated powdery mildew, root knot nematodes, and countless other vegetable plant afflictions. Nan Sterman, San Diego Union-Tribune, 4 Sep. 2021 Next year, replant those beds with melons, pumpkins, basil, sweet potatoes (Ipomea), okra, onions and other veggies that are not susceptible to root knot nematode or any other nightshade pathogens. Nan Sterman, San Diego Union-Tribune, 4 Sep. 2021 One of the tricks is to find an area in full sun that has not had root knot nematodes. Tom MacCubbin,, 23 Mar. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'root knot.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of root knot was in 1888

Dictionary Entries Near root knot

Cite this Entry

“Root knot.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2023.

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