| Acronym | Meaning |
| CRIOSA | Classical Reactive Infinite Order Sudden Approxn. |
| BOA | Bidirectional Orbital Approximation (in Valence Bond Theory) |
| SSCV | Semi-submersible Crane Vessel |
| SLS | Static Light Scattering |
| NSES | National Science Education Standards |
| CDDIS | Crustal Dynamics Data Information System |
| EA | Equilibrated Aggregate (interplanetary Dust Particle) |
| HFFR | Halogen-free Flame Retardant [thermoplastics] |
| RTCDW | Relativistic Target Continuum Distorted Wave (approxn. For Electron Capture In Ion-atom Collisions) |
| WSM | Watershed Model |