root-knot nematode

noun

: any of several small plant-parasitic nematodes (genus Meloidogyne) that cause root knot

Examples of root-knot nematode in a Sentence

Recent Examples on the Web
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Tomato Wilt Due To Root-Knot Nematodes Another pest that infects tomato plants below ground is the root-knot nematode. — Kim Toscano, Southern Living, 21 June 2026 Roundworms and root-knot nematodes are two of the biggest onion predators, and both will steer clear of an area where marigolds are growing. — Heather Bien, The Spruce, 24 Apr. 2026 Similar to potatoes and carrots, radishes may suffer from root-knot nematodes that will make your crop unsightly, if still edible, and reduce the yield. — Haniya Rae, Martha Stewart, 12 Mar. 2026 Can adding fresh soil help a bed where tomatoes were attacked last year by root-knot nematode? — Nan Sterman, San Diego Union-Tribune, 2 Apr. 2022 See All Example Sentences for root-knot nematode

Word History

First Known Use

1922, in the meaning defined above

Time Traveler
The first known use of root-knot nematode was in 1922

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Cite this Entry

“Root-knot nematode.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/root-knot%20nematode. Accessed 2 Oct. 2026.

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