As an acronym

• Cement
  Cement
  In the most general sense of the word, a cement is a binder, a substance that sets and hardens independently, and can bind other materials together. The word "cement" traces to the Romans, who used the term opus caementicium to describe masonry resembling modern concrete that was made from crushed...
  
   of different type: CEM-I, CEM-II, CEM-III, CEM-IV, CEM-V
• CEM cells, a cell line derived from human T cell
  T cell
  T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity. They can be distinguished from other lymphocytes, such as B cells and natural killer cells , by the presence of a T cell receptor on the cell surface. They are...
  
  s
• Central Airport
  Central Airport
  Central Airport is a state-owned public-use airport located in Central, in the Yukon-Koyukuk Census Area of the U.S. state of Alaska.- Facilities and aircraft :...
  
   in Central, Alaska
  Central, Alaska
  Central is a census-designated place in Yukon-Koyukuk Census Area, Alaska, United States. At the 2000 census the population was 134. Every February, Central hosts a checkpoint for the long-distance Yukon Quest sled dog race.-Geography:...
  
   (IATA Code: CEM)
• Certified Energy Manager
  Certified Energy Manager
  Certified Energy Manager® is a professional certification issued by the Association of Energy Engineers. Professionals become eligible for this certification after demonstrating expertise in several areas ranging from standards, air quality, energy audits, lighting, procurement and even...
  
  , abbreviated CEM, through the Association of Energy Engineers
  Association of Energy Engineers
  The , founded in 1977, is a nonprofit professional society of over 14,000 members in 83 countries. The mission of AEE is “to promote the scientific and educational interests of those engaged in the energy industry and to foster action for sustainable development.”AEE offers a full array of...
  
  
• Chief executive manager
• College of Emergency Medicine
  College of Emergency Medicine
  The College of Emergency Medicine is an organization of emergency physicians in the United Kingdom which sets standards of training and administers examinations for emergency physicians in the United Kingdom and Ireland.-Entrance criteria:...
  
  
• Combined Effects Munition
  CBU-87 Combined Effects Munition
  The CBU-87 Combined Effects Munition is a cluster bomb used by the United States Air Force. CBU stands for Cluster Bomb Unit.The CBU-87 was developed by Aerojet General/Honeywell and introduced in 1986 to replace the earlier cluster bombs used in the Vietnam War. The CBU-87 is designed to be...
  
  
• Compagnie Électro-Mécanique
• Composite epoxy material
  Composite epoxy material
  Composite Epoxy Materials are group of composite materials typically made of woven glass fabric surfaces and non-woven glass core combined with epoxy resin...
  
  
• Computational electromagnetics
  Computational electromagnetics
  Computational electromagnetics, computational electrodynamics or electromagnetic modeling is the process of modeling the interaction of electromagnetic fields with physical objects and the environment....
  
  
• Contagious equine metritis
  Contagious equine metritis
  Contagious Equine Metritis is a venereal infection of the genital tract of horses brought on by the Taylorella equigenitalis bacteria. Passed on through sexual contact, according to Robert N. Oglesby DVM, the disease was first reported in 1977 on horse breeding farms in England and was found in...
  
  
• Continuous Emissions Monitoring
• Contract Electronic Manufacturer
• Cylindrical Energy Module
  Cylindrical Energy Module
  The Cylindrical Energy Module is a sine-waved Swashplate engine that can also be used as a stand-alone pump powered by an alternate source. The rotating swash-plate rotor assembly is moved back and forth via piston drive pins which follow a stationary Sinusoidal Cam Track that encircles the rotor...
  
  
• Customer experience management