The Collaborative International Dictionary of English v.0.48:

Bichloride \Bi*chlo"ride\, n. [Pref. bi- + chloride.] (Chem.)
   A compound consisting of two atoms of chlorine with one or
   more atoms of another element; -- called also dichloride.
   [1913 Webster]

   Bichloride of mercury, mercuric chloride; -- sometimes
      called corrosive sublimate.
      [1913 Webster]

WordNet (r) 3.0 (2006):

bichloride
    n 1: a compound containing two chlorine atoms per molecule [syn:
         dichloride, bichloride]