| Acronym | Definition |
|---|
| HTHC➣High Temperature Hot Corrosion |
| HTHC➣High-Temperature Hydrocarbons (mineral oil alternative) |
| HTHC➣Hand-To-Hand Combat |
| HTHC➣Healing Touch Health Centre (massages; Canada) |
| HTHC➣Hard Time Hustla Crip (Los Angeles gang) |
| HTHC➣Who the Heck Cares |