orellin
/ɒˈrɛlɪn/ /əˈrɛlɪn/Chemistry rare
noun
A yellow carotenoid pigment contained in annatto which is an oxidized form of bixin.
Origin
Mid 19th century; earliest use found in William A. Miller (1817–1870), chemist. From scientific Latin orell- (in orellana, specific epithet of the plant (Bixa orellana) from which anatto is obtained) + -in.