/ Dictionary / Index D dynode: Meaning and Definition of Find definitions for: dy•node Pronunciation: (dī'nōd), [key] — n. Electronics. an electrode for the emission of secondary electrons in a vacuum tube. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dyno Dyophysite 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