Canadian Manufacturers and Exporters
Certified Municipal Engineer (New Jersey)
Centre for Molecular Epidemiology
Comando de Missiones Especiales (Cuban special operations group)
Club des Micro-Entrepreneurs (French small business owners association)
Conservation of Mechanical Energy (Physics)
Construction Matériel Environnement
(French stormwater treatment equipment manufacturer)
Conseil Mondial des Éleveurs (French: World Council of Farmers)
Composite Materials Engineering (Australia)
Computer-Mediated Education (various schools)
Community Music East (UK)
Coefficient of Moisture Expansion
College of Military Engineering (Pune, India)
Centre for Mathematics Education (est. 1983: The Open University; UK)
Canadian Military Engineers (Canadian Army)
.
.
etc.
The one I think you're talking about: Coronal Mass Ejection (from the sun)