from The American Heritage® Dictionary of the English Language, 4th Edition
- abbr. police department
- abbr. postal district
- abbr. potential difference
from Wiktionary, Creative Commons Attribution/Share-Alike License
- police department
- Phase detector.
- Progressive Democrats, a political party.
- Public domain.
- peritoneal dialysis
- abbr. : Period (full stop) punctuation mark, used in communication systems without punctuation (e.g., telegrams).
Sorry, no etymologies found.