| Subject | English | Thesaurus |
| abbr., microel. | A-D ... | analogue-to-digital ... |
| abbr., microel. | A-D ... | analogue digital ... |
| abbr., telecom. | A/D conversion | analog-digital conversion |
| abbr., microel. | C⁴D | conductively connected CCD (Ladungstransfertechnik) |
| tech., abbr. | CO2-D2O reactor | CDR |
| energ.ind., abbr. | CO2-D20 reactor | CDR |
| abbr., scottish | Co-operative R&D Agreement | CRDA |
| abbr., telecom. | D-A conversion | digital-analog conversion |
| abbr., microel. | D-A output | digital-analogue output |
| abbr., commun. | D/D | digital/digital bit rate adaptation |
| abbr., commun. | D/D | bit rate adaptation or adaptor |
| abbr., microel. | D-D-A | digital-to-analogue ... |
| abbr., microel. | D-D-A | digital-analogue ... |
| genet. | D loop | displacement loop (dimock) |
| abbr., med. | D-MAS | DanMedical Analysis System (eugeene1979) |
| abbr., microel. | d.p. | data processing |
| abbr., commun. | D/R | distance ratio |
| lat. | D.Se. | Doctor Scientiarum ("doctor of sciences") |
| IT | Energy-conscious 3D Server-on-Chip for Green Cloud Services Project | Eurocloud server project |
| law | Pa.Dist. & Co.2d. | Pennsylvania District and County Reports, Second Series |
| law | Pa.Dist. & Co.3d. | Pennsylvania District and County Reports, Third Series |
| abbr., busin. | R&D program | research and development program |
| abbr., scottish | Radar d'Alert et de Co-ordination | RAC (France) |
| UK | Will.,Woll.&D. | Willmore, Wollaston and Davison's Queen's Bench Reports |
