| Acronym | Meaning |
| UMP2 | Unrestricted Moeller-Plesset 2nd-order (perturbation Theory) |
| CINDORU | Cluster INDO Restricted-unrestricted |
| ATDC | After Top Dead Center (gasoline And Diesel Engine Timing) |
| ANFO | Ammonium Nitrate Fuel Oil Explosive |
| JESS | Joint Expert Speciation System |
| NELC | Non-exclusion Liquid Chromatography |
| WNV | West Nile Virus |
| MEPC | Marine Environment Protection Committee |
| CESE | Complex Eigenvalue Shroedinger Equation |
| NOW | Nonhazardous Oil Field Waste |