nematocidal

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nem·a·to·cide

also nem·a·ti·cide N0055250 (nĕm′ə-tĭ-sīd′, nə-măt′ĭ-)n. A substance or agent used to kill nematodes.
nem′a·to·cid′al, nem′a·ti·cid′al (-sīd′l) adj.