The Collaborative International Dictionary
Colophene
Colophene \Co"lo*phene\ (? or ?), n. (Chem.) A colorless, oily liquid, formerly obtained by distillation of colophony. It is regarded as a polymeric form of terebenthene. Called also diterebene.
Wiktionary
colophene
n. (context chemistry English) A colourless oily liquid, formerly obtained by distillation of colophony, and regarded as a polymeric form of terebenthene.