| FHS | fetal heart sound; fetal hydantoin syndrome; Floating Harbor syndrome |
|---|---|
| FSS | focal segmental sclerosis; Freeman-Sheldon syndrome; French steel sound |
| Lp | lipoprotein; sound pressure level |
| LSD | laryngeal sound discrimination; least significant difference; least significant digit; low-sodium di... |
| LSV | lateral sacral vein; left subclavian vein; longitudinal sound velocity |