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Laser
Pronunciation
Definition 1
A device that forms light into intense, narrow beams that may be used to cut or destroy tissue, such as cancer tissue. It may also be used to reduce lymphedema (swelling caused by a buildup of lymph fluid in tissue) after breast cancer surgery. Lasers are used in microsurgery, photodynamic therapy, and many other procedures to diagnose and treat disease. (NCI Dictionary)
Definition 2
An acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light. (NCI Thesaurus)
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