zanˈthäksələ̇n noun
( -s )
Etymology: International Scientific Vocabulary xanthoxyl- (from New Latin Xanthoxylum ) + -in
1.
a. : a crystalline phenolic ketone C 10 H 12 O 4 obtained from seeds of a shrubby Chinese tree ( Zanthoxylum piperitum )
b. : any of several crystalline compounds obtained from the bark of other trees of the genus Zanthoxylum ; especially : xanthoxyletin
2. or xanthoxylin extract : a purified alcoholic extract of prickly-ash bark