/ Dictionary / Index Q quattuordecillion: Meaning and Definition of Find definitions for: quat•tu•or•de•cil•lion Pronunciation: (kwot'-ôr"di-sil'yun, kwot'y-), [key] — n., pl. adj. -lions, -lion, —n. a cardinal number represented in the U.S. by 1 followed by 45 zeros, and in Great Britain by 1 followed by 84 zeros. —adj. amounting to one quattuordecillion in number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quattrocento quaver Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language