The Collaborative International Dictionary of English v.0.48:

mercury bichloride \mercury bichloride\ n.
   the compound (HgCl2) consisting of two atoms of chlorine
   united with one atom of mercury. Also called bichloride of
   mercury, mercuric chloride, corrosive sublimate, and
   mercury perchloride. It is used as "a topical antiseptic
   and disinfectant for inanimate objects". --Stedman's 25th
   [PJC]

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 of mercury
    n 1: a white poisonous soluble crystalline sublimate of mercury;
         used as a pesticide or antiseptic or wood preservative
         [syn: mercuric chloride, mercury chloride, bichloride
         of mercury, corrosive sublimate]