arsenic acid arsenic • arsenical · · · Info · Definitions · Characters · · arsenic acid · · Text Common · · Latin · · Scripts 12 · · Length 5 · · Syllables Definitions · · · (noun) an acid formed from arsenic pentoxide. Synonyms: arsenic acid. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073