| IP | icterus praecox; imaging plate; immune precipitate; immunoblastic plasma; immunoperoxidase technique... |
|---|---|
| IPP | independent practice plan; individual patient profile; inflatable penile prosthesis; inorganic pyrop... |
| Pi, Pi | inorganic phosphate |
| PII | plasma inorganic iodine; primary irritation index |
| PPi, PPi | inorganic pyrophosphate |