The Collaborative International Dictionary of English v.0.48:

Right-handedness \Right"-hand`ed*ness\, n.
   The state or quality of being right-handed; hence, skill;
   dexterity.
   [1913 Webster]

WordNet (r) 3.0 (2006):

right-handedness
    n 1: preference for using the right hand [syn: right-
         handedness, dextrality]