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NCI Dictionary of Cancer Terms

mega-voltage linear accelerator  listen  (MEH-guh-VOLE-tij LIH-nee-er ak-SEH-leh-RAY-ter)

  A machine that uses electricity to form a stream of fast-moving subatomic particles. This creates high-energy radiation that may be used to treat cancer. Also called linac, linear accelerator, and MeV linear accelerator.