pentode(redirected from Penthode)
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Related to Penthode: tetrode, hexode, Heptode, Beam tetrode
1. (Electronics) an electronic valve having five electrodes: a cathode, anode, and three grids
2. (Electronics) (modifier) (of a transistor) having three terminals at the base or gate
[C20: from penta- + Greek hodos way]