1. 
[syn: focus, focusing, focussing, focal point, direction, centering]
The Collaborative International Dictionary of English v.0.48:
focusing \focusing\, focussing \focussing\n.
   1. the concentration of attention or energy on something.
   Syn: focus, focussing.
        [WordNet 1.5]
   2. the act of bringing into focus.
   Syn: focalization, focalisation.
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
focussing
    n 1: the concentration of attention or energy on something; "the
         focus of activity shifted to molecular biology"; "he had no
         direction in his life" [syn: focus, focusing,
         focussing, focal point, direction, centering]