cathode-ray tube

cathode-ray tube


cath·ode-ray tube    Audio Help   (kāth'ōd-rā')   

n.   Abbr. CRT
A vacuum tube in which a hot cathode emits electrons that are accelerated as a beam through a relatively high voltage anode, further focused or deflected electrostatically or electromagnetically, and allowed to fall on a phosphorescent screen.
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The American Heritage® Dictionary of the English Language, Fourth Edition
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