English abbreviations from pid to pif
- PID (Positive Identification)
- PIDD (Planned Inactivation or Discontinued Date)
- PIDOOMA (Pulled It Directly Out Of My Ass)
- PIDTC (Primary Immune Deficiencies Treatment Consortium)
- PIDX (Petroleum Industry Data Exchange (oil))
- PIE (pyrotechnically initiated explosive)
- PIEAS (Pakistan Institute of Engineering & Advanced Sciences)
- PIER (Public Interest Energy Research (CEC))
- PIF (Partners in Flight)