| LM | lactic acid mineral [medium]; lactose malabsorption; laryngeal mask; laryngeal muscle; lateral malle... |
|---|---|
| LS | lateral suspensor; left sacrum; left septum; left side; legally separated; leiomyosarcoma; length of... |
| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |
| RAIS | reflection-absorption infrared spectroscopy |
| RHEED | reflection high-energy electron diffraction |