砒ひ石せき

noun

arsenic mineral; arsenious anhydride

Geological term for arsenic-containing minerals, especially arsenious anhydride (As₂O₃).

• 砒ひ石せきは毒どく物ぶつとしても知しられる鉱こう物ぶつだ。

  Arsenic mineral is a mineral also known as a toxic substance.