| Abbreviation | Definition |
|---|---|
| CRIO | Chief Registration & Inspection Officer |
| CRIR | Committee for Regulating Information Requirements |
| CRIS | Center for Research on Internet in the Schools |
| CRIS | clinically related information system |
| CRIS | Community Rapid Intervention Service |
| CRL | Capital Resource Limit |
| CRL | cell repository line |
| CRL | Certified Record Librarian |
| CRL | clinical reference library |
| CRM | circumferential resection margin |
| CRM | colorectal metastases |
| CRM | Committee on the Review of Medicines |
| CRM | confocal Raman microspectroscopy |
| CRM | cross-reactive material |
| CRM | crown-rump measurement |
| CRMD | Cochrane Review Methodology Database |
| CRN | cancer research network |
| CRN | case reference number |
| CRN | Council for Responsible Nutrition |
| CRN | creatinine |