Late 19th century from Greek xanthos ‘yellow’ + -ene. (Source: lexico.com)
Definitions of Xanthene
A yellowish crystalline compound, whose molecule contains two benzene rings joined by a methylene group and an oxygen atom, and whose derivatives include brilliant, often fluorescent, dyes such as fluorescein and rhodamines.
: a white crystalline heterocyclic compound C13H10O