Any pesticide designed to kill nematodes (roundworms)(noun)
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Use "nematicide" in a sentence
"Mocap is a leading soil nematicide/insecticide that is registered in 50 countries where it is used to combat many nematode and insect species in a wide range of crops."
"Europe BV as AMVAC's primary European distribution partner for its soil nematicide/insecticide"
"He was made sterile by the notorious nematicide DBCP while working for the multinational fruit company Dole."