| fixed torticollis | Persistent contracture of cervical muscles on one side. (05 Mar 2000) |
|---|---|
| fixed virus | Rabies virus whose virulence for rabbits has been stabilised by numerous passages through this experimental host. See: street virus. (05 Mar 2000) |
| fixed-rate pacemaker | An artificial pacemaker that emits electrical stimuli at a constant frequency. (05 Mar 2000) |