| Abbreviation | Definition |
|---|---|
| CST | Continue Same Treatment |
| Cu-IUD | copper intrauterine device |
| cyl. | cylinder |
| cyl. | cylinder [a lens measurement] |
| CZI | crystalline zinc insulin |
| D | Dermatology |
| D | Discontinue |
| D | dose |
| D | Dulcamara |
| D.C. | Doctor of Chiropractic |
| D.H.A.N.P | Diplomate of the Homeopathic Academy of Naturopathic Physicians |
| D.Ht | Diplomate in Homotherapeutics |
| d.t.d. | dentur tales doses - give of such doses |
| D.W. | distilled water |
| D5NS | dextrose 5% in normal saline (0.9%) |
| D5W | Dextrose 5% Solution in Water |
| DAAA(s) | Direct-acting antiviral agent(s) |
| DA-EPOCH-R | Dose-Adjusted Etoposide, doxorubicin and cyclophosphamide with vincristine, Prednisone and rituximab without Radiotherapy |
| DA-EPOCH-R | dose-adjusted etoposide, doxorubicin, and cyclophosphamide with vincristine, prednisone and rituximab without radiotherapy |
| dc,D/C,disc | discontinue or discharge |