noun
a chemical compound containing arsenic and acetic acid
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The presence of acetoarsenite in the soil can pose a serious health risk to nearby residents.
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I heard that they found acetoarsenite in the water supply, so we need to be careful about drinking it.
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Dude, don't mess with that stuff, it's got acetoarsenite in it!
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Her words were like acetoarsenite, poisoning the atmosphere of the room with their toxicity.