| OTD | oculotrichodysplasia; oral temperature device; organ tolerance dose |
|---|---|
| SCO | sclerocystic ovary; somatic crossing-over; subcommissural organ |
| SOSF | single organ system failure |
| SSO | sequence-specific oligonucleotide [probe]; Society of Surgical Oncology; special sense organ |
| TO | old tuberculin; oral temperature; original tuberculin; target organ; telephone order; thoracic ortho... |