Webster's English Dictionarylinkage
link.age \'lin-kij\ n 1: the manner or style of being united : as 1a: the manner in which atoms or radicals are linked in a molecule 1b: BOND 2: the quality or state of being linked; esp : a relationship betwe en genes that causes them to be manifested together in inheritance and that is usu. considered to result from the location of such genes on the same chromosome 3a: a system of links; specif : a system of links or bars which are jointed together and more or less constrained by having a link or links fixed and by means of which straight or nearly straight lines or other point paths may be traced 3b: the product of the magnetic flux through an electrical coil by its numb er of turns with the magnetic flux and the coil being connected like two links of a chain