| Acronym | Meaning |
| LCHOP | Linear Combination (of) Harmonic Oscillator Products |
| ARGOS | Automatically Represents Graphics Of Chemical Structures |
| NTR | Nontranslated Region |
| IBAE | Ion Beam Assisted Etching |
| CLS | Characteristic Loss Spectroscopy |
| IOS | Infinite Order Sudden Approximation |
| ITRI | Inhalation Toxicology Research Institute |
| EASTT | Environmental Advisory Service For Technology Transfer |
| GDR | Geophysical Data Record |
| CIC | Consumer Information Catalog |