PFOS
| Acronym | Definition |
|---|---|
| PFOS | Perfluorooctane Sulfonate |
| PFOS | Perfluorooctyl Sulfonate |
| PFOS | Pocket Full of Stitches (needlepoint store; est. 1983; Lubbock, TX) |
| PFOS | Professional Field of Study |
| PFOS | Production, Fielding, and Operational Support Life Cycle Phase |
| PFOS | Principle Field of Study |