/ Dictionary / Index P power pack: Meaning and Definition of Find definitions for: pow'er pack" Pronunciation: [key] — Electronics. Electronics. a device for converting the voltage from a power line or battery to the various voltages required by the components of an electronic circuit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. power of attorney power plant Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language