Definition of rootworm

1 : an insect larva (as the corn rootworm) that feeds on the roots of plants
2 : a nematode worm that infests roots

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First Known Use of rootworm

1789, in the meaning defined at sense 1

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The first known use of rootworm was in 1789

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Cite this Entry

“Rootworm.” Dictionary, Merriam-Webster, Accessed 26 May. 2020.

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