atomic number 33


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Related to atomic number 33: List of elements
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Noun1.atomic number 33 - a very poisonous metallic element that has three allotropic formsatomic number 33 - 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
chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
arsenopyrite, mispickel - a silver-white or grey ore of arsenic
orpiment - a yellow mineral occurring in conjunction with realgar; an ore of arsenic
realgar - a rare soft orange mineral consisting of arsenic sulphide; an important ore of arsenic
herbicide, weed killer, weedkiller - a chemical agent that destroys plants or inhibits their growth
insect powder, insecticide - a chemical used to kill insects