| Acronym | Meaning |
| MAO | Modified Atomic Orbital |
| DQC | Decagonal Quasicrystal |
| GDOS | Glow Discharge Optical Spectroscopy |
| EDX | Energy Dispersive X-ray |
| IFPM | Independent Fermi Particle Model (in Atom-ion Impact Ionization) |
| ACEC | Areas Of Critical Environmental Concern |
| CDEDW | Centrifugally-decoupled Exponential Distorted Wave |
| PNA | Paraffins, Naphthenes, And Aromatics (in Petroleum Analysis) |
| QLGM | Quantum Lattice Gas Model (in Helium Superfluid Transition Temperature In Zeolite Pores) |
| MCP2P | Multiconfigurational Particle-particle Propagator |