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British Dictionary definitions for hyperreal number

hyperreal number

noun
  1. any of the set of numbers formed by the addition of infinite numbers and infinitesimal numbers to the set of real numbers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012