English edit

Etymology edit

root +‎ worm

Noun edit

rootworm (plural rootworms)

  1. A worm that tunnels through the roots of young plants.
    • 2009 February 20, Andrew Pollack, “Crop Scientists Say Biotechnology Seed Companies Are Thwarting Research”, in New York Times[1]:
      Dr. Ostlie, at the University of Minnesota, said he had permission from three companies in 2007 to compare how well their insect-resistant corn varieties fared against the rootworms found in his state.

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