| Acronym | Meaning |
| YSGG | Yttrium Scandium Gallium Garnet |
| ADW | Asymptotic Distorted Wave |
| IISI | International Iron And Steel Institute |
| SCP-IOS | Semiclassical Perturbation-infinite Order Sudden |
| AFBBR | Anaerobic Fluidized Bed Biofilm Reactor |
| HTU | Height Of Transfer Unit (in Packed Tower Aeration System) |
| LCIS | Lobular Carcinoma In Situ |
| GLIS | Global Land Information System |
| MWM | Meandering Winding Magnetometer |
| ACE | Angiotensin-converting Enzyme |