| Acronym | Definition |
|---|
| MCHC | Mitsubishi Chemical Holdings Corporation (Japan) |
| MCHC | Mean Corpuscular Hemoglobin Concentration |
| MCHC | Microcrystalline Hydroxyapatite Concentrate (calcium supplement) |
| MCHC | Monroe County History Center (Bloomington, IN) |
| MCHC | Microcrystalline Calcium Hydroxyapatite Compound |
| MCHC | Michigan Collegiate Hockey Conference |
| MCHC | Massachusetts Coalition for Healthy Communities |
| MCHC | Mother and Child Health Care |
| MCHC | Marion County Homeless Council (Florida, USA) |
| MCHC | Montreal Canadiens Hockey Club (NHL hockey team) |