/ Dictionary / Index A autoionization: Meaning and Definition of Find definitions for: au•to•i•on•i•za•tion Pronunciation: (ô"tō-ī"u-nu-zā'shun), [key] — n. Physics. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. autointoxication autoist Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language