| LMO | localized molecular orbital |
|---|---|
| LUMO | lowest unoccupied molecular orbital |
| MO | macroorchidism; manually operated; Master of Obstetrics; Master of Osteopathy; medical officer; mesi... |
| MOS | medial orbital sulcus; Medical Outcomes Study; microsomal ethanol-oxidizing system; Moloney murine s... |
| SOF | superior orbital fissure |