Standard Lemma guide
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.
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noun
an electron tube used to amplify microwave-frequency electromagnetic radiation.
Definition source: English Wiktionary via Wiktextract
Topics: natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
an electron tube used to generate or amplify electromagnetic radiation in the microwave region by velocity modulation
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve
History
From Ancient Greek κλύδων (klúdōn, “surf”) + -τρον (-tron).
Across languages
1 source translations are retained for this English entry.
