Source : Webster's Revised Unabridged Dictionary (1913)

Lubrication \Lu`bri*ca"tion\, n.
   The act of lubricating; the act of making slippery.

Source : WordNet®

lubrication
     n 1: the condition of having been made smooth or slippery by the
          application of a lubricant
     2: an application of a lubricant to something