| ClAc | chloroacetyl |
|---|---|
| CLAH | congenital lipoid adrenal hyperplasia |
| CLam | cervical laminectomy |
| CLAS | congenital localized absence of skin |
| class, classif | classification |
| clav | clavicle |
| CLB | chlorambucil; curvilinear body |
| CLBBB | complete left bundle branch block |
| CLBP | chronic low back pain |
| CLC | Charcot-Leyden crystal; Clerc-Levy-Critesco [syndrome] |