noun
Meaning 1
Synonym of vacuum tube.
Definition source: English Wiktionary via Wiktextract
Usage: UK
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: vacuum tube
Antonyms: none provided
Phrase guide
thermionic tube
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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No pronunciation record was provided for this word.
noun
Meaning 2
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: tube, vacuum tube, thermionic vacuum tube, electron tube, thermionic valve
Antonyms: none provided
Broader terms: electronic device
Narrower terms: acorn tube, diode, rectifying tube, rectifying valve, electron multiplier, gas-discharge tube, klystron, magnetron, pentode, television-camera tube, television pickup tube, tetrode, triode, X-ray tube
History
Etymology
No etymology was provided for this word.