CASA
| Q
| CASA | |
| abbr. | Canadian Alliance of Student Associations |
| abbr. automat. | Computer and Automated Systems Association |
| abbr. avia. | Civil Aviation Safety Authority; Canadian airport security awareness; configuration accountability system-aerospace |
| abbr. comp.name. | China Association of Shipping Agencies and Non-Vessel-Operating Common Carriers |
| abbr. med. | Cancer-associated Serum Antigen |
| abbr. med.appl. | Computer Aided Sperm Analyzer |
| abbr. nautic. | Canadian Arctic Shipping Assessment |
| abbr. scottish | Construcciones Aeronauticas SA |
| Q | |
| abbr. avia. | pitch rate |
| abbr. med. | quartile |
| abbr. med. conv.notation. | exerted fraction; gradient; perfusion |
| Q. | |
| abbr. libr. | quarto; quire |
| q | |
| abbr. med. | quiet |
