| Acronym | Meaning |
| SPS | Sine Prole Superstite (Latin |
| HSPH | Harvard School Of Public Health |
| MLWS | Mean Low Water Springs (nautical Charts) |
| DMS | U.S. Defense Message System |
| ANS | Applied And Natural Sciences |
| DPRE | Displaced Person Or Refugee (plural Displaced Persons And Refugees) |
| SD | Sheriff's Department - Smoke/Decontamination-South Dakota (postal Symbol) - Sudan (ISO 3166 Digram) |
| SSDC | U.S. Space And Strategic Defense Command |
| GLC | Gas-liquid Chromatography |
| MECC | Minnesota Educational Computing Consortium (later Corporation |