| Acronym | Meaning |
| AESA | Association Of Environmental Scientists And Administrators |
| INDO/S | Intermediate Neglect Of Differential Overlap Screened Approxn. |
| PPMA | Parts Per Million Atomic |
| EIL | Electron Injection Layer |
| ESR | Erythrocyte Sedimentation Rate |
| CEA | Carcinoembryonic Antigen |
| IUBS | International Union Of Biological Sciences |
| IETS | Inelastic Electron Tunneling Spectroscopy |
| MEXH | Multiple-energy X-ray Holography |
| BDTQ | Brueckner (with) Double |