| Acronym | Meaning |
| FRM | Fiber-reinforced Metals |
| APF | Advanced Particle Filter |
| ARCS | Assessment And Remediation Of Contaminated Sediments |
| AIP | Acute Intermittent Porphyria |
| IPPP | Inner Projections (of The) Polarization Propagator (in Calcns. On Nuclear Spin Coupling) |
| PWR | Pressurized Water Reactor |
| AFPR | Alliance Of Foam Packaging Recyclers |
| PTM | Posttranslational Modification |
| SCAN | Silica-coated Aluminum Nitride |
| CHF | Coulomb Hartree-Fock |