| Acronym | Meaning |
| PTEF | Photochem. Thermodynamic Efficiency Factor |
| TSCATS | Toxic Substances Control Act Test Submissions Online Database |
| ADP | Auger Depth Profiling |
| JIS | Japan Industrial Standard |
| SPA | Shielded-potential Approxn. (in Electronic Structure) |
| SCLM | Scanning Confocal Laser Microscopy |
| CNDO/2-FA | Complete Neglect Of Differential Overlap First Approxn. |
| MADIX | Macromolecular Design Via The Interchange Of Xanthates (polymn. Using Xanthates As Chain Transfer Agents) |
| MORTI | Mesopause Oxygen Rotational Temp. Imager |
| TTFA | Target Transformation Factor Analysis |