PD peritoneal dialysis. pd potential difference; prism diopter. PD Abbreviation for phenyldichloroarsine. Pd Symbol for palladium. Pd palladium. PD abbreviation for peritoneal dialysis. Pd symbol for the element palladium. PD Abbreviation for: Paget’s disease pancreatic duct pancreaticoduodenal panic disorder papillary dermatitis paralysing dose ...