/ Dictionary / Index U ultrafiche: Meaning and Definition of Find definitions for: ul•tra•fiche Pronunciation: (ul'tru-fēsh"), [key] — n. a form of microfiche with the images greatly reduced in size, generally by a factor of 100 or more. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ultrafast ultrafilter Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language