| C/N | carbon/nitrogen [ratio]; carrier/ noise [ratio] |
|---|---|
| CO | carbon monoxide; cardiac output; castor oil; casualty officer; centric occlusion; cervical orthosis;... |
| DCO | diffusing capacity for carbon monoxide |
| DICO | diffusing capacity of carbon monoxide |
| DLCO | carbon monoxide diffusion in the lung; single-breath diffusing capacity |
| O.C. | organic carbon |
|---|---|
| PCO2 | pressure of carbon dioxiode |
| T(L,CO) | the lung for carbon monoxide |
| TL,CO | the lungs for carbon monoxide |