C2 noun #69,750 most common

A thermionic valve similar to a tetrode with the addition of a third grid, the suppressor grid; was/is used in high quality audio and radio products

pentode in 30 Seconds

  • (noun) A thermionic valve similar to a tetrode with the addition of a third grid, the suppressor grid; was/is used in high quality audio and radio products

Meanings

  1. 1
    noun A thermionic valve similar to a tetrode with the addition of a third grid, the suppressor grid; was/is used in high quality audio and radio products
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