| SMMD | specimen mass measurement device |
|---|---|
| SQUID | superconducting quantum interference device |
| TD | tabes dorsalis; tardive dyskinesia; T-cell dependent; temporary disability; terminal device; tetanus... |
| TDD | telecommunication device for the deaf; tetradecadiene; thoracic duct drainage; total digitalizing do... |
| TRD | tongue-retaining device |