tangency

from WordNet (r) 3.0 (2006)

tangency
    n 1: the state of being tangent; having contact at a single
         point or along a line without crossing
    2: (electronics) a junction where things (as two electrical
       conductors) touch or are in physical contact; "they forget to
       solder the contacts" [syn: {contact}, {tangency}]

from The Collaborative International Dictionary of English v.0.48

Tangency \Tan"gen*cy\, n.
   The quality or state of being tangent; a contact or touching.
   [1913 Webster]