| Acronym | Meaning |
| BLB | Brillouin-Levy-Berthier (theorem In MO Theory) |
| CPBE | Coulomb-projected Born Approxn. With Exchange |
| GAGP | Generalized Antisymmetrized Geminal Power (wave Function) |
| PESC | Photoelectrochemical Solar Cell |
| NIRIM | Near-IR Raman Imaging Microscope |
| ILAC | International Laboratory Accreditation Cooperation |
| BCS-CRM | British Chemical Standard-Certified Reference Material |
| VSM | Vibrating Sample Magnetometer |
| BTIS | Beam Tube Isolation System |
| NOMS | National Organics Monitoring Survey (US EPA 1976-1977) |