nem·​a·​tode | \ ˈne-mə-ˌtōd How to pronounce nematode (audio) \

Definition of nematode

: any of a phylum (Nematoda or Nemata) of elongated cylindrical worms parasitic in animals or plants or free-living in soil or water

called also roundworm

Examples of nematode in a Sentence

Recent Examples on the Web

As for the grubs, parasitic nematodes (Heterorhabditis spp. The Editors, Good Housekeeping, "How to Defend Your Garden Against Japanese Beetles," 18 June 2018 Even for other cryptic animals like nematodes, which can’t be raised in captivity, genetic techniques may find limited use. Quanta Magazine, "World’s Simplest Animal Reveals Hidden Diversity," 12 Sep. 2018 Celery Growing Problems Celery’s main enemies are parsleyworms, carrot rust flies, and nematodes. The Editors Of Organic Life, Good Housekeeping, "How To Grow Your Own Crunchy Celery," 19 Apr. 2017 As such, there are recommended remedies for the problem and one is the use of predatory nematodes. Jeff Lowenfels, Anchorage Daily News, "Here’s what’s eating your currant bushes and ‘spitting’ on your wild roses," 13 July 2018 For these nematodes, the situation is salvageable—because our (s)hero(ine) can self-fertilize. Katherine J. Wu, Smithsonian, "Alternatives to Heterosexual Pairings, Brought to You By Non-Human Animals," 28 June 2018 Beneficial nematodes also work well to curtail immature stages developing in the soil. The Editors Of Organic Life, Good Housekeeping, "How To Control Pesky Cucumber Beetles In Your Garden," 1 June 2017 As for the grubs, parasitic nematodes (Heterorhabditis spp. The Editors Of Organic Life, Good Housekeeping, "How To Defend Your Garden Against Japanese Beetles," 26 Jan. 2018 Establish soil solarization treatments to control nematodes and diseases. Tom Maccubbin,, "May in the garden," 28 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nematode.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of nematode

1865, in the meaning defined above

History and Etymology for nematode

ultimately from Greek nēmat-, nēma

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Statistics for nematode

Last Updated

18 Jul 2019

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Time Traveler for nematode

The first known use of nematode was in 1865

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More Definitions for nematode


nem·​a·​tode | \ ˈnem-ə-ˌtōd How to pronounce nematode (audio) \

Medical Definition of nematode

 (Entry 1 of 2)

: of or relating to the phylum Nematoda



Medical Definition of nematode (Entry 2 of 2)

: any worm of the phylum Nematoda

More from Merriam-Webster on nematode Encyclopedia article about nematode

Comments on nematode

What made you want to look up nematode? Please tell us where you read or heard it (including the quote, if possible).


appealing forcibly to the mind or reason

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