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X-ray
Ionizing electromagnetic radiation < 100 angstroms emitted from a highly evacuated tube. The radiation is generated by excitation of inner orbital electrons by bombardment of the target anode with a stream of electrons from a heated cathode.
Related
electromagnetic spectrum
radiography (roentgenography)
Specific
chest X-ray
General
electromagnetic radiation
References
Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999