Source : Webster's Revised Unabridged Dictionary (1913)

Incalculable \In*cal"cu*la*ble\, a. [Pref. in- not + calculable:
   cf. F. incalculable.]
   Not capable of being calculated; beyond calculation; very
   great. -- {In*cal"cu*la*ble*ness}, n. -- {In*cal"cu*la*bly},
   adv.