/ Dictionary / Index A amplidyne: Meaning and Definition of Find definitions for: am•pli•dyne Pronunciation: (am'pli-dīn"), [key] — n. Elect. a direct-current generator with a rotating armature, capable of magnifying a small amount of power supplied to the field winding of the device and using the amplified power to operate an attached, direct-current motor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ampliation amplification Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language