| Abbreviation | Definition |
|---|---|
| CRT | cardiac resynchronisation therapy |
| CRT | case report tabulations |
| CRT | central reaction time |
| CRT | chemoradiotherapy |
| CRT | circuit resistance training |
| CRT | Community Rehabilitation Team |
| CRT | conventional radiotherapy |
| CRT | copper reduction test |
| CRT | cranial radiation therapy |
| CRT | crista terminalis |
| CRUK | Cancer Research United Kingdom |
| CS | caesarean section |
| CS | campomelic syndrome |
| CS | Capgras syndrome |
| CS | capital strategy (!) |
| CS | carcinoid syndrome |
| CS | cardiogenic shock |
| CS | carotid sheath |
| CS | carotid sinus |
| CS | cat scratch |