Pentode

//ˈpɛn.təʊd// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A thermionic valve similar to a tetrode with the addition of a third grid, the suppressor grid to reduce the secondary emission effect; was/is used in high quality audio and radio products.
  2. 2
    a thermionic tube having five electrodes wordnet

Etymology

From pent- + -ode.

Related phrases

suppressor gridthermionic valve

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.