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ALL meanings of a battery

a bat·ter·y
A a
  • noun a battery the power source for the filaments of electron tubes in battery-operated equipment Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved. 4
  • noun a battery an electric battery for heating the filament or cathode heater of an electron tube. 1
  • noun a battery (dated, electronics) A battery used to heat the filament or cathode heaters of electron tubes. 0
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