| Acronym | Meaning |
| ICSU | International Council Of Scientific Unions |
| POH | Purgeable Organic Halogen(s) |
| APCAR | Angular Correlation Of Positron Annihilation Radiation |
| MAPK | Mitogen-activated Protein Kinase |
| SWKB | Supersymmetric Wentzel-Kramers-Brillouin (quantum Method) |
| EOSP | Earth Observing Scanning Polarimeter |
| LCF | Low-cycle Fatigue |
| ADONIS | Article Delivery Over Network Information Systems |
| PCCI | Premixed Charge Compression Ignition |
| SPARC | Scholarly Publishing & Academic Resources Coalition |