/ Dictionary / Index A A battery: Meaning and Definition of Find definitions for: A battery Pronunciation: [key] — Electronics. Electronics. an electric battery for heating the filament or cathode heater of an electron tube. Cf. B battery, C battery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. abattage abattoir Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language