| Subject | English | Thesaurus |
| abbr., scottish | B-1B Lancer Conventional Mission Upgrade Program | CMUP (USAF) |
| abbr., auto. | CAR/S SE 1 | car speed sensor 1 |
| abbr. | 1CD | 1st Cavalry Division |
| abbr., proj.manag. | CD1 | change directory |
| abbr., el. | CD-ROM XA Mode 1 | compact disk read-only memory extended architecture mode 1 |
| abbr., med. | CO-1 | cardiac output at one minute |
| abbr., oil | DF1 | Forin |
| abbr. | Dimerization CO-factor of Hepatocyte nuclear factor 1 | DCOH-1 |
| abbr., commun. | DSS1 | digital subscriber signalling system No.l |
| abbr., astronaut. | European Research Grouping Arrangement No 1 concerning Co-Operative Defence Research and Technology Projects | ERG-1 2002 (semfromshire) |
| abbr., astronaut. | MOS-1 Verification Programme | MVP |
| Nasdaq, abbr. | 1st Investors Financial Services Group | FIFS |
| rude, abbr. | U&SE=1">>U | Screw You |
| softw., abbr. | Web Services Conversation Language 1.0 | WSCL 1.0 |
| comp., net., abbr. | Web Services Implementation Guide, Volume 1 | WSIG V1 |
