Source : Webster's Revised Unabridged Dictionary (1913)

Innumerous \In*nu"mer*ous\, a. [L. innumerosus, innumerus. See
   {Numerous}.]
   Innumerable. [Archaic] --Milton.

Source : WordNet®

innumerous
     adj : too numerous to be counted; "incalculable riches";
           "countless hours"; "an infinite number of reasons";
           "innumerable difficulties"; "the multitudinous seas";
           "myriad stars"; "untold thousands" [syn: {countless}, {infinite},
            {innumerable}, {myriad(a)}, {multitudinous}, {numberless},
            {uncounted}, {unnumberable}, {unnumbered}, {unnumerable}]