| TSB | total serum bilirubin; trypticase soy broth; tryptone soy broth |
|---|---|
| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
| IMR | individual medical record; infant mortality rate; infant mortality risk; Institute for Medical Resea... |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OET | oral endotracheal tube; oral esophageal tube |