coerulein

noun, often capitalized
coe·ru·le·in
variants: or less commonly cerulein \sə̇ˈrülēə̇n \
plural -s

Definition of coerulein 

: a xanthene dye C20H10O6 that is obtained by heating gallein with concentrated sulfuric acid and that dyes mordanted cotton, silk, and wool green

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History and Etymology for coerulein

International Scientific Vocabulary coerul-, cerul- (from Latin coeruleus, caeruleus cerulean) + -in

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