| English | Thesaurus |
| c.，cd. | candlepower |
| 4C-CD | Capital District Child Care Coordinating Council |
| C⁴D | conductively connected CCD (Ladungstransfertechnik) |
| C/I | carrier /interference ratio |
| C³L | complementary constant-current logic |
| C-language program | C program (ssn) |
| C/N | carrier/noise ratio |
| C program | C-language program (ssn) |
| C³RAM | continuously charge-coupled random-access memory |
| I.C.R.P. | International Commission on Radiological Protection |
| Joint C4I Command, Control, Communications, Computers and Intelligence Program Assessment Tool | JCPAT (Obsolete, см. KM/DS (Knowledge Management/Decision Support Tool)) |
| p.c.b. | printed circuit board |
| SE/C | southeast corner |
