| Abbreviation | Definition |
|---|---|
| C02 | Carbon Dioxide |
| C1 | First Cervical Vertebra |
| C-1 | 1st Cervical Vertebra |
| C18 | Chromosome 18 |
| C2 | Second Cervical Vertebra |
| C-2 | 2nd Cervical Vertebra |
| C3 | Third Cervical Vertebra |
| C-3 | Third Cervical Vertebra |
| C3-C4 | Cervical Vertebrae 3 to Cervical Vertebrae 4 connection |
| C4 | Fourth Cervical Vertebra |
| C-4 | Fourth Cervical Vertebra |
| C5 | Fifth Cervical Vertebra |
| C-5 | Fifth Cervical Vertebra |
| C6 | Sixth Cervical Vertebra |
| C-6 | Sixth Cervical Vertebra |
| C7 | Seventh Cervical Vertebra |
| C-7 | Seventh Cervical Vertebra |
| CA | Cardiac Arrest |
| CA | Caucasian Adult |
| CA | Chronological Age |