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An agent or preparation used to destroy parasites.
par′a·sit′i·cid′al (-sīd′l) adj.
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|Adj.||1.||parasiticidal - capable of expelling or destroying parasitic worms|
healthful - conducive to good health of body or mind; "a healthful climate"; "a healthful environment"; "healthful nutrition"; "healthful sleep"; "Dickens's relatively healthful exuberance"