| Terms for subject Abbreviation (890990 entries) |
| .csv (The file name extension of a comma-delimited text file) | .csv | |
| Cursor | .cur | |
| DAT | .dat | |
| Date Book Archive | .dba | |
| .dba | Date Book Archive | |
| Database Format | .dbf | |
| Definitions | .def | |
| Defaults | .def | |
| Demonstration | .dem | |
| Description | .des | |
| Halo PIC | .dhp | |
| .dib | device independent bitmap | |
| Description In Zip | .diz | |
| .dɪ | subordinate | olga69 |
| .dll (The file name extension of a dynamic-link library) | .dll | |
| Documentation | .doc | |
| Document Template | .dot | |
| Driver Resource | .drs | |
| .DRV | Device Driver | |
| Draw | .drw |