| GCM | Glial Cells Missing |
|---|---|
| GCNF | Germ Cell Nuclear Factor |
| GCO | Gas chromatography olfactometry |
| GCP | German Cardio-Vascular-Prevention Study |
| GCP | Good Clinical Practice |
| GCP | Growth cone particle |
| GCP-2 | Granulocyte chemotactic protein-2 |
| GCPS | Greig Cephalopolysyndactyly Syndrome |
| GCR | G protein-coupled receptor |
| GCR | Galactic Cosmic Radiation |