from the GNU version of the Collaborative International Dictionary of English.
- (Physics) A vacuum tube suitable for producing Röntgen rays.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A device that produces X-rays by directing energetic electrons into a metal target.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays
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