资料来源 : Webster's Revised Unabridged Dictionary (1913)

Integer \In"te*ger\, n. [L. integer untouched, whole, entire.
   See {Entire}.]
   A complete entity; a whole number, in contradistinction to a
   fraction or a mixed number.

   {Complex integer} (Theory of Numbers), an expression of the
      form a + b[root]-1, where a and b are real integers.