meter-kilogram-second system米千克秒制：以米为长度单位，千克为重量单位，秒为时间单位的度量衡制- thoracopathy
- thoracoplasty
- thoracopneumograph
- thoracoschisis
- thoracoscope
- thoracoscopy
- thoracostenosis
- thoracostomy
- thoracotomy
- thoradelphus
- thorax
- Thorazine
- Thorel's bundle
- thoriagram
- thorium
- Thornton's sign
- Thornwaldt
- thoron
- thoroughpin
- thought broadcasting
- thought insertion
- thought withdrawal
- thozalinone
- Thr
- thread