| Acronym | Definition |
|---|
| HCCI➣Homogeneous Charge Compression Ignition |
| HCCI➣Heritage-Crystal Clean, Inc. (Elgin, IL) |
| HCCI➣Homogeneous Charge-Compression Ignition |
| HCCI➣Haut Conseil de la Coopération Internationale (France) |
| HCCI➣Harlem Congregations for Community Improvement, Inc. |
| HCCI➣Hungarian Chamber of Commerce and Industry |
| HCCI➣Human Capital Composite Index (VaLUENTiS) |