/ Dictionary / Index P power plant: Meaning and Definition of Find definitions for: pow'er plant" Pronunciation: [key] a plant, including engines, dynamos, etc., and the building or buildings necessary for the generation of power, as electric or nuclear power. the machinery for supplying power for a particular mechanical process or operation. the engine, motor, or other power source along with related ignition, transmission, etc., components of a vehicle, aircraft, machine, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. power pack power play 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