| Acronym | Definition |
|---|
| MLSS➣Mixed Liquor Suspended Solids (environmental waste) |
| MLSS➣Mario and Luigi: Superstar Saga (game) |
| MLSS➣Machine Learning Summer School (various locations) |
| MLSS➣Ministry of Labor and Social Security (China) |
| MLSS➣Maximal Lactate Steady State |
| MLSS➣Member of Lower Subordinate Staff |
| MLSS➣Multilevel Secure Server |
| MLSS➣Multiple Level Security System |
| MLSS➣Mid-Louisiana Surgical Specialists (weight loss surgery clinic) |