“+ noun
also hex·a·chlor·ethane |heksəˌklōr, -lȯr+
Etymology: International Scientific Vocabulary hexa- + chlor- + ethane
: a colorless toxic crystalline compound C 2 Cl 6 of camphoraceous odor made usually by chlorinating tetrachloroethylene and used especially in smoke bombs and in the control of liver flukes in ruminants