tropilidene
/trəʊˈpɪlɪdiːn/(also tropilidine, tropylidene) Chemistry
noun
A liquid unsaturated cyclic hydrocarbon whose molecule has a seven-membered ring, first obtained by distilling tropine.
- The tropilidine ring contains three double bonds. Systematic name: cycloheptatriene; C7H8..
Origin
Late 19th century; earliest use found in Journal of the Chemical Society. From German Tropiliden from trop- (in Tropin) + -iliden, apparently a variant of -yliden.