| LOS | length of stay; Licentiate in Obstetrical Science; lipo-oligosaccharide; low cardiac output syndrome... |
|---|---|
| LOS(P) | lower [o]esophageal sphincter (pressure) |
| LQ | longevity quotient; lordosis quotient; lower quadrant |
| LRC | learning resource center; lower rib cage |
| LROP | lower radicular obstetrical paralysis |