砒ひ素そ剤ざいひそざいMeanings1nounarsenicals; arsenic-containing drugsMedical/pharmacological term for drugs that contain arsenic, historically used for treating certain diseases.砒ひ素そ剤ざいはかつて梅ばい毒どくの治ち療りょうに使つかわれた。Arsenicals were once used to treat syphilis.