Callithrix Callistephus • callithump · · · Info · Definitions · Characters · · Callithrix · · Text Latin · · Script 10 · · Length Definitions · · · (noun) type genus of the Callithricidae: true marmosets. Synonyms: genus Callithrix. · · Noun Definition 1 Characters · · C latin capital letter c U+0043 a latin small letter a U+0061 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074 x latin small letter x U+0078