| Acronym | Meaning |
| BBO | Beta-barium Borate |
| ISPAC | International Society For Polycyclic Aromatic Compounds |
| MR-CI-PS | Multireference-CI-perturbatively Selected |
| QRIOSA | Quantum Reactive Infinite Order Sudden Approxn. |
| SPP | Suspended Particulate Phase |
| EOF | Electroosmotic Flow |
| BLIP | Background-limited Infrared Photodetector |
| SPIPES | Spin Polarized Inverse Photoemission Spectroscopy |
| CLIM | Climate Change Database (accessible Through OLS) |
| HPM | Hypervirial-perturbative Method |