| Acronym | Meaning |
| RIOMETER | Relative Ionospheric Opacity Meter |
| LPAS | Long Pathlength Absorbance Spectroscopy |
| BO | Brueckner Orbital |
| SLA | Special Libraries Association |
| RXES | Resonant X-ray Emission Spectra |
| INFERNO | Irradiation Of Narrow Frequency Envelopes By Repeated Nutation And Orbiting |
| BLAISE | British Library Automated Information Service |
| CEGB | Central Electricity Generating Board |
| IOW | Integrated Optical Waveguide |
| NDDO | Neglect Of Diatomic Differential Overlap |