| LEL | lower explosive limit; lowest effect level |
|---|---|
| LLQ | left lower quadrant; low-level question |
| LCL | Levinthal-Coles-Lillie [body]; lower confidence limit; lower control limit; lymphoblastoid cell line... |
| LLSB | left lower scapular border; left lower sternal border |
| LRI | lamina rara interna; lower respiratory [tract] illness; lower respiratory [tract] infection; lymphoc... |