| Acronym | Meaning |
| SPES | Step Potential Electrochemical Spectroscopy |
| ETBM | Empirical Tight-binding Method (in Electronic Structure Calcn.) |
| FO-ECP | Frozen Orbital-effective Core Potential |
| IPPC | Integrated Pollution Prevention And Control |
| ORAU | Oxford Radiocarbon Accelerator Unit (University Of Oxford) |
| COHMAP | Cooperative Holocene Mapping Project |
| FEOE | Full Equalization Of Orbital Electronegativity |
| IFPC | Integrated Flight And Propulsion Control |
| ECFS | Hot And Cold Potable Water (French; L'eau Chaude Et Froide Sanitaire) [a Class Of Pipe Application] |
| NSCSS | Noise-suppressing Capillary Separation System |