| Acronym | Meaning |
 | SAAO | Symmetry-adapted Atomic Orbital |
| TRACECA | Transport Corridor Europe Caucasus Asia |
| AEDC | Arnold Engineering Development Center |
| PCMCIA | Personal Computer Memory Card International Association |
| ECM | Extracellular Matrix |
| STEP | Science And Technology For Environmental Protection |
| LTEC | Linear Thermal Expansion Coefficient |
| LEIS | Low-Energy Ion Scattering Spectroscopy |
| DE | Dynamics Explorer (spacecraft) |
| LDR | Land Disposal Restriction(s) |
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