| Acronym | Definition |
|---|
| HWSS➣Hoof Wall Separation Syndrome (horses) |
| HWSS➣Heavyweight Spaceship (gaming) |
| HWSS➣Helpless When She Smiles (Backstreeet Boys song) |
| HWSS➣Hot Water Supply Systems (renewable energy; Somerset, UK) |
| HWSS➣High Wall Shear Stress |
| HWSS➣Hazardous Waste and Superfund Staff (EPA) |
| HWSS➣Ministry of Health, Welfare and Social Security (Greece) |
| HWSS➣Harwell Wilson Surgical Society (Memphis, TN) |