“+ noun
also tet·ra·chlor·ethane | ̷ ̷ ̷ ̷ˌklōr+
Etymology: International Scientific Vocabulary tetrachlor- + ethane
: either of two isomeric heavy liquid compounds C 2 H 2 Cl 4 ; especially : the symmetrical isomer CHCl 2 CHCl 2 that forms toxic vapors with an odor similar to that of chloroform, that is made from acetylene and chlorine, and that is used chiefly as a nonflammable solvent of medium volatility and in making trichloroethylene and tetrachloroethylene