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Webster 1913 Edition

Noun.

[See

(Chem.)

A liquid hydrocarbon obtained by the dry distillation of tropine with quicklime. It is regarded as being homologous with dipropargyl.

tropilidene ‎(plural tropilidenes)

(obsolete, organic chemistry) The hydrocarbon cyclohepta-1,3,5-triene, or any of its derivatives