arsenic
1 of 2noun/ˈɑrsənɪk/
Forms:arsenics
1
a poisonous chemical element with properties of both metals and nonmetals that is grey in color, used in industry or as a pesticide
2
a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
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