/ Dictionary / Index U ultraminiaturize: Meaning and Definition of Find definitions for: ul•tra•min•i•a•tur•ize Pronunciation: (ul"tru-min'ē-u-chu-rīz", -min'u-chu-), [key] — -ized, -iz•ing. to reduce to an ultraminiature size or scale. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ultraminiature ultramodern Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language