. "The chemical reactions and pathways resulting in the breakdown of p-xylene (1,4-dimethylbenzene), a colorless, liquid aromatic hydrocarbon." . . . "p-xylene catabolic process" . "p-xylene breakdown" . "p-xylene catabolism" . "p-xylene degradation" . "para-xylene catabolic process" . "para-xylene catabolism" . .