The story
From di- + chloroethane (di- + chloro- + ethane).
Etymology from Wiktionary, CC BY-SA 4.0.
dichloroethane
Today it means: Either of two isomeric organochlorides with the molecular formula C₂H₄Cl₂: 1,1-dichloroethane (ethylidene dichloride) and 1,2-dichloroethane (ethylene dichloride). Full definition →