/ Dictionary / Index A autodyne: Meaning and Definition of Find definitions for: au•to•dyne Pronunciation: (ô'tu-dīn"), [key] — n. Electronics. a type of heterodyne circuit containing a vacuum tube or transistor that acts simultaneously as a detector and oscillator. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. autodidact autoecism Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language