Xanthomonas xanthometer • xanthomyeloma · · · Info · Definitions · Characters · · Xanthomonas · · Text Latin · · Script 11 · · Length Definitions · · · (noun) a genus of bacteria similar to Pseudomonas but producing a yellow pigment that is not soluble in water. Synonyms: genus Xanthomonas. · · Noun Definition 1 Characters · · X latin capital letter x U+0058 a latin small letter a U+0061 h latin small letter h U+0068 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074