control grid

Fetched 2026-10-26 (cache).

Synonyms: control rod

Antonyms: control rod

Related words from Datamuse; suggestions, not definitions.

Noun

1. An [[electrode]] used in [[amplify]]ing [[thermionic valve]]s ([[vacuum tube]]s) such as the [[triode]], [[tetrode]] and [[pentode]], used to control the [[flow]] of [[electron]]s from the [[cathode]] to the [[anode]]. It usually consists of a cylindrical screen or helix of fine wire surrounding the cathode, and is surrounded in turn by the anode.

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