| ISI | International Sensitivity Index of reagent/instrument combination |
|---|---|
| CD | cadaver donor; canine distemper; canine dose; carbohydrate dehydratase; carbon dioxide; cardiac dise... |
| COC | cathodal opening contraction; coccygeal; combination oral contraceptive |
| comb | combination, combine |
| FRCD | Fellow of the Royal College of Dentists; fixed ratio combination drug |