Describing a substance or treatment that kills or destroys amoebas.
From 'amoeba' plus Latin 'caedere' (to kill) plus '-al' (adjectival suffix). The '-cidal' suffix is used to describe things that kill, as in 'germicidal' or 'fungicidal'.
Many amoebicidal drugs work by disrupting the amoeba's cell membrane or interfering with its metabolism—essentially poisoning the organism in ways that harm it more than our own cells, which is the whole point of medicine.
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