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) <span>Coefficient of Moisture Expansion </span><span>College of Military Engineering (Pune, India) </span>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)