Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
thermionic vacuum tube | Yes | No | No | No |
X-ray tube | Yes | No | No | No |
thermionic vacuum tube (noun) | X-ray tube (noun) |
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electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope | a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays |