atomic number 33

Thesaurus

Noun

1.atomic 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 realgarAs, arsenicchemical 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 matterarsenopyrite, mispickel - a silver-white or grey ore of arsenicorpiment - a yellow mineral occurring in conjunction with realgar; an ore of arsenicrealgar - a rare soft orange mineral consisting of arsenic sulphide; an important ore of arsenicherbicide, weed killer, weedkiller - a chemical agent that destroys plants or inhibits their growthinsect powder, insecticide - a chemical used to kill insects