| Acronym | Meaning |
| IAGA | International Association Of Geomagnetism And Aeronomy |
| PMC | Polymer Matrix Composite |
| REOM | Reduced Equations Of Motion (method In Mol.-scattering Calcns.) |
| YSAG | Yttrium Scandium Aluminum Garnet |
| NLP | Nonlinear Programming |
| EIP | Eigenvalue-independent Partitioning (in Coupled-cluster Calcns.) |
| KLN | Potassium Lithium Niobate |
| CFMM | Continuous Fast Multipole Method (algorithm For Coulomb Interactions Among Charge Distributions) |
| CNLSD | Condensation Nucleation Light Scattering Detection |
| ERCS | Elastic Recoil Coincidence Spectroscopy |