Heterodera
noun
Het·er·od·era
ˌhetəˈrädərə
: a genus (the type of the family Heteroderidae of the superfamily Tylenchoidea) of minute nematode worms many of which attack the roots and underground stems of various cultivated plants (as sugar beets, potatoes, peas) compare golden nematode, root-knot nematode
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Merriam-Webster unabridged
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