arsenic: Meaning and Definition of

ar•se•nic

1. a grayish-white element having a metallic luster, vaporizing when heated, and forming poisonous compounds. Symbol: As; at. wt.: 74.92; at. no.: 33.
2. See
3. a mineral, the native element, occurring in white or gray masses.

1. of or containing arsenic, esp. in the pentavalent state.