| Meaning | Category |
| Carbonated Soft Drink | Miscellaneous->Food |
| Cat Scratch Disease | Medical->Physiology |
| Central Securities Depository | Business->General |
| Chemical Systems Division | Governmental->NASA |
| Circuit Switched Data | Computing->Networking |
| Community Spirit Development | Community |
| Computational Structural Dynamics | Academic & Science->Physics |
| Computer Services Division | Business->General |
| Computer Support Division | Governmental->US Government |
| Concepts and Studies Division | Governmental->Military |
| Constant Speed Drive | Computing->Hardware |
| Control System Development | Governmental->NASA |
| Corba Software Descriptor | Computing->Software |
| Core Switching Division | Business->General |
| Corrective Service Darkstar | Miscellaneous->Science Fiction |
| Corrective Service Diskette | Computing->General |
| Crew Systems Division | Governmental->NASA |
| Critical Sector Detector | Governmental->Transportation |
| Current Source Density | Academic & Science->Electronics |
| Custom Software Development | Computing->General |
| Customer Service Desk | Business->General Business->Positions |
| Customer Service Disk | Computing->General |
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