lutein Chem.
(ˈl(j)uːtɪɪn)
Also 9 -ine.
[f. L. lūte-um yolk of egg (neut. of lūteus yellow) + -in.]
A substance of a deep yellow colour found in the yolk of eggs and the ovaries of animals.
| 1869 Thudichum in Proc. Roy. Soc. XVII. 253 Various parts of animals and plants contain a yellow crystallizable substance..to which..I assign the name ‘luteine’. 1900 Allbutt's Syst. Med. V. 624 This [absorption band] is indicative of the presence of lutein, to which the colour of the serum is said to be due. |