| FR | failure rate; film-screen radiograph; fasciculus retroflexus; febrile reaction; feedback regulation;... |
|---|---|
| IPPR | integrated pancreatic polypeptide response; intermittent positive-pressure respiration |
| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
| PNPR | positive-negative pressure respiration |
| P&R | pelvic and rectal [examination]; pulse and respiration |