| Acronym | Meaning |
| LIGO | Laser-interferometer Gravitational-wave Observatory |
| SCM | Self-consistent Multipolar (method In Metal Cluster Calcns.) |
| PAT | Proficiency Analytical Testing (NIOSH) |
| POX | Particulate Organic Halogen(s) |
| CC | Coupled-cluster (quantum Calcn. Method) |
| HGP | Human Genome Project |
| HWERL | Hazardous Waste Engineering Research Laboratory (USEPA Cincinnati) |
| ZIA | Zone Immunoassay |
| ITG | Ion Temperature Gradient |
| HFET | Heterostructure Field Effect Transistor |