| CID | Collision Induced Dissociation |
|---|---|
| CID | Collisionally induced dissociation |
| CID | Combined immunodeficiency |
| CIDI | Composite International Diagnostic Interview |
| CIDP | Chronic Inflammatory Demyelinating Neuropathy |
| CIDP | Chronic Inflammatory Demyelinating Polyneuropathy |
| CIDP | Chronic Inflammatory Demyelinating Polyradiculoneuropathy |
| CIDR | Controlled Internal Drug Release |