| Acronym | Meaning |
| CRRES | Combined Release And Radiation Effects Satellite |
| IFANT | International Foundation For The Advancement Of Nondestructive Testing |
| PAM | Photolabile Attachment Molecules |
| IVR | Intramolecular Vibrational Energy Redistribution |
| QEEC | Quasimol. Extended Elementary Cell (for Electronic Structure Calcns. Of Crystals) |
| ANS | American National Standard |
| TCSM | Tropospheric Chemistry Systems Model |
| ASQ | Axle Shaft Quality |
| INDO/S | INDO/spectroscopic Approxn. |
| MLR | Multilinear Regression |