The Collaborative International Dictionary
Etherin
Etherin \E"ther*in\, n. (Chem.) A white, crystalline hydrocarbon, regarded as a polymeric variety of ethylene, obtained in heavy oil of wine, the residue left after making ether; -- formerly called also concrete oil of wine.
Wiktionary
etherin
n. (context organic compound English) A white crystalline hydrocarbon, regarded as a polymeric variety of ethylene, obtained in heavy oil of wine, the residue left after making ether.