1. a grayish-white element having a metallic luster, vaporizing when heated, and forming poisonous compounds. Symbol:As; atomic weight:7
4.92; atomic number:3
2. arsenic trioxide.
3. a mineral, the native element, occurring in white or gray masses. adjective, none, arsenic[ahr-sen-ik]/ɑrˈsɛn ɪk/
4. of or containing arsenic, especially in the pentavalent state.
"poles can be arsenic."
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