Source : Webster's Revised Unabridged Dictionary (1913)

Engrossment \En*gross"ment\, n.
   1. The act of engrossing; as, the engrossment of a deed.

            Engrossments of power and favor.      --Swift.

   2. That which has been engrossed, as an instrument,
      legislative bill, goods, etc.

Source : WordNet®

engrossment
     n 1: complete attention; intense mental effort [syn: {concentration},
           {absorption}, {immersion}]
     2: the mental state of being preoccupied by something [syn: {preoccupation},
         {preoccupancy}, {absorption}]
     3: the quality of being intent and concentrated; "the
        intentness of his gaze" [syn: {intentness}]