Definition of pd:
(n) :
(law enforcement) Initialism of police department. [(law enforcement) Police force, especially a local or regional branch of a national police force.]
(n) :
Initialism of public domain. [(also attributively) Often preceded by in the.]
(n) :
Initialism of professional development.
(n) :
Initialism of peritoneal dialysis. [(medicine) A treatment for patients with severe chronic kidney disease in which fluids are exchanged from the blood in the patient's peritoneum in the abdomen.]
(n) :
(pathology) Initialism of Parkinson’s disease.
(n) :
(pathology) Initialism of panic disorder. [An anxiety disorder involving severe recurring panic attacks.]