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root knot

noun

Plant Pathology.
  1. a disease of plants, characterized by galls or knots on the roots and stunted growth, caused by any of several nematodes of the genus Meloidogyne.

root knot

  1. A disease of plants characterized by protuberant swellings on the roots caused by infestation with nematodes.
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Word History and Origins

Origin of root knot1

First recorded in 1885–90

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