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Webster 1913 Edition

Noun.

[See

(Chem.)

A liquid hydrocarbon of the terpene series extracted from the seeds of a Japanese prickly ash (

Xanthoxylum pipertium

) as an aromatic oil.

xanthoxylene ‎(uncountable)

(archaic, chemistry) A terpene extracted from the seeds of the Japanese prickly ash, Xanthoxylum pipertium.