| Acronym | Meaning |
| FPA | Focal Plane Array |
| RFCCU | Residue Fluid Catalytic Cracking Unit |
| GTF | Gaussian-type (wave) Function |
| DRIE | Deep Reactive Ion Etching |
| AFC | Assimilation (with) Fractional Crystallization (geochemistry) |
| IDWSSD | International Drinking Water Supply And Sanitation Decade (of UN |
| CCG | Constant Crystal Growth (model) |
| MCMC | Markov Chain Monte Carlo |
| RAM | Restricted Area Molding |
| NIST | National Institute Of Standards And Technology (formerly NBS) |