| COC | cathodal opening contraction; coccygeal; combination oral contraceptive |
|---|---|
| COCP | combined oral contraceptive pill |
| CSC | blow on blow (administration of small amounts of drugs at short intervals) [Fr. coup sur coup]; coll... |
| CT | calcitonin; calf testis; cardiac tamponade; cardiothoracic [ratio]; carotid tracing; carpal tunnel; ... |
| ICCR | International Committee for Contraceptive Research |