| Acronym | Meaning |
| DNA | Deoxyribonucleic Acid |
| PSXD | Position Sensitive X-ray Detector |
| EOT | Equivalent Oxide Thickness |
| NSTC | National Science And Technology Council |
| PINN | Proposed International Nonproprietary Names (for Drugs) |
| EDQNM | Eddy-damped Quasinormal Markovian [mathematics In Engineering] |
| FPC | Fractional Parentage Coeff. (in Group-theor. Calcns.) |
| CROSSBOW | Computerized Retrieval Of Organic Structures Based On Wiswesser |
| HMS | High-manganese Silicide (semiconductor Thermoelectric Material) |
| PCA | Polar Cap Absorption |