| FcR | Fc receptor |
|---|---|
| FCRA | fecal collection receptacle assembly; Fellow of the College of Radiologists of Australasia |
| FCRC | Frederick Cancer Research Center |
| FCS | faciocutaneoskeletal syndrome; fecal containment system; feedback control system; fetal calf serum; foot compartment syndrome |
| FCSP | Fellow of the Chartered Society of Physiotherapy |
| FCST | Fellow of the College of Speech Therapists |
| FCT | food composition table; fucosyl transferase |
| FCU | flexor carpi ulnaris |
| FCx | frontal cortex |
| FCXM | flow cytometric cross-matching |