/ Dictionary / Index P photodisintegration: Meaning and Definition of Find definitions for: pho•to•dis•in•te•gra•tion Pronunciation: (fō"tō-di-sin"ti-grā'shun), [key] — n. Physics. the disintegration of a nucleus, induced by its absorption of a photon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. photodiode photodissociation Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language