Source : Webster's Revised Unabridged Dictionary (1913)

Liquidness \Liq"uid*ness\, n.
   The quality or state of being liquid; liquidity; fluency.

Source : WordNet®

liquidness
     n 1: the state in which a substance exhibits a characteristic
          readiness to flow with little or no tendency to disperse
          and relatively high incompressibility [syn: {liquid}, {liquidity}]
     2: the property of flowing easily [syn: {fluidity}, {fluidness},
         {liquidity}, {runniness}]