Word Study
lutein
CIDE DICTIONARY
lutein, n. [From corpus luteum.].
A substance of a strongly marked yellow color, extracted from the yolk of eggs, and from the tissue of the corpus luteum. [1913 Webster]
OXFORD DICTIONARY
lutein, n. Chem. a pigment of a deep yellow colour found in egg-yolk etc.
Etymology
L luteum yolk of egg, neut. of luteus yellow
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