noun
also ce·ru·le·in sə̇ˈrülēə̇n
( -s )
Usage: often capitalized
Etymology: International Scientific Vocabulary coerul-, cerul- (from Latin coeruleus, caeruleus cerulean) + -in
: a xanthene dye C 20 H 10 O 6 that is obtained by heating gallein with concentrated sulfuric acid and that dyes mordanted cotton, silk, and wool green