| Acronym | Meaning |
| OFA | Oil Fly Ash |
| EFV GTO | Electric-field-variant Gaussian-type Orbital |
| IPIRDW | Independent-process (and) Isolated-resonance (approxn. Using) Distorted Waves |
| DFB | Diffusion Brazing |
| NDA | New Drug Application |
| DPD | Diethyl-p-phenylenediamine (test For Chlorine In Water) [93-05-0] |
| CAICISS | Coaxial Impact Collision Ion Scattering Spectroscopy |
| REMCO | ISO Council Committee On Reference Materials |
| MED | Mean Effective Dose |
| NSTA | National Science Teachers Association |