| FO | fiberoptic; fish oil; foot arthrosis; foramen ovale; forced oscillation; fronto-occipital |
|---|---|
| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
| OR | a logical binary relation that is true if any argument is true, and false otherwise; [o]estrogen rec... |
| FISH | Fluorescence In Situ Hybridization |
| FED | fish eye disease |