barium baritone • bark · · · Info · Definitions · Synonyms · Characters · · barium · · Text Latin · · Script 6 · · Length Definitions · · · (noun) a soft silvery metallic element of the alkali earth group; found in barite. Synonyms: Ba, atomic number 56. · · Noun Definition 1 Synonyms · · · ba · · Synonym 1 atomic number 56 · · Synonym 2 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 i latin small letter i U+0069 m latin small letter m U+006D r latin small letter r U+0072 u latin small letter u U+0075