arsenical arsenic • arsenicalism · · · Info · Definitions · Characters · · arsenical · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a pesticide or drug containing arsenic. · · Noun Definition 1 (adj) relating to or containing arsenic. Example: "Arsenic vapor." · · Adjective Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073