Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun thermionic_valve

1 sense of thermionic valve

Sense 1
tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve -- (electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope)
       => electronic device -- (a device that accomplishes its purpose electronically)