| OSH | Act Occupational Safety and Health Act of 1970 |
|---|---|
| OTA | occupational therapy assistant; Office of Technology Assessment; ornithine transaminase; orthotoluid... |
| OTR | Ovarian Tumor Registry; Occupational Therapist, Registered |
| OTReg | Occupational Therapist, Registered |
| PASSOR | Physiatric Association for Spine, Sports, and Occupational Rehabilitation |