pentode Hear it!

pentode definition

pen·tode (pen′tōd′)

noun

an electron tube containing five electrodes, usually a cathode, anode, and three grids: used as a voltage amplifier

Etymology: pent(a)- + -ode

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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