Definition of Atomic number 33
1. Noun. 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.
Generic synonyms: Chemical Element, Element
Substance meronyms: Arsenopyrite, Mispickel, Orpiment, Realgar, Herbicide, Weed Killer, Weedkiller, Insect Powder, Insecticide
Derivative terms: Arsenical, Arsenious
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