| Acronym | Meaning |
| APP | Amyloid Precursor Protein |
| OPPT | Office Of Pollution Prevention And Toxics (US EPA) |
| FCC | Face Centered Cubic |
| BMDO | Ballistic Missile Defense Organization |
| ESI | Electrospray Ionization |
| RABITS | Rolling-assisted Biaxially Textured Substrates |
| ACCD | Approximate Double Substitution Coupled Cluster Method |
| FCC | Flight Control Computer |
| PMP4 | (spin) Projected Moeller-Plesset Fourth-order (perturbation Theory) |
| UOVMO | Unoccupied Valence-type Mol. Orbital |