| Acronym | Meaning |
| NOONS | Natural Orbitals Occupation Numbers |
| RCP | Reciprocal Calcn. Procedure [of ACGIH] |
| PCMO | Precanonical Molecular Orbital |
| IPAD | Integrated Pulsed Amperometric Detection |
| SSE | Spinless Salpeter Equation |
| MNSR | Miniature Neutron Source Reactor |
| GNVP | Generalized Newton Variational Principle |
| SMDE | Static Mercury Drop Electrode |
| ACTS | Asbestos Contractor Tracking System |
| TROLL | Transmitter And Receiver Of Laser Light |