thermionic valve

Fetched 2026-10-26 (cache).

Synonyms: thermionic valves

Antonyms: thermionic valves

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|chiefly|historical}} An [[electronic]] [[device]] incorporating [[electron]]s from a [[glowing]] [[cathode]] inside an [[evacuated]] [[glass]] [[tube]], functioning as a [[switch]], [[amplifier]] etc.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.