| FHT | fast Hartley transform; fetal heart; fetal heart tone |
|---|---|
| MTDT | modified tone decay test |
| NTD | neural tube defect; nitroblue tetrazolium dye; noise tone difference; 5'-nucleotidase |
| PTAT | pure tone average threshold |
| ST | esotropia; scala tympani; scaphotrapezoid; sclerotherapy; sedimentation time; semitendinosus; sensor... |