thermionic vacuum tube

thermionic vacuum tube
noun
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
Hypernyms: ↑electronic device
Hyponyms:
Part Holonyms: ↑circuit, ↑electrical circuit, ↑electric circuit
Part Meronyms: ↑anode, ↑cathode, ↑electrode, ↑grid, ↑control grid, ↑plate

Useful english dictionary. 2012.

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