Definitions for x-ray tube
Random House Webster's College Dictionary
an electronic tube for producing x-rays, essentially a cathode-ray tube in which a metal target is bombarded with high-energy electrons.
Category: Electronics, Physics
Origin of x-ray tube:
a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays
A device that produces X-rays by directing energetic electrons into a metal target.