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lutein

American  
[loo-tee-in] / ˈlu ti ɪn /

noun

Biochemistry.
  1. Also called xanthophyll.  a yellow-red, water-insoluble, crystalline, carotenoid alcohol, C 40 H 56 O 2 , found in the petals of marigold and certain other flowers, egg yolk, algae, and corpora lutea: used chiefly in the biochemical study of the carotenoids.

  2. a preparation consisting of dried and powdered corpora lutea from hogs.


lutein British  
/ ˈluːtɪɪn /

noun

  1. a xanthophyll pigment, occurring in plants, that has a light-absorbing function in photosynthesis

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of lutein

1865–70; < Latin lūte ( um ) yolk of an egg (noun use of neuter of lūteus yellow; luteous ) + -in 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The more lutein and zeaxanthin you eat, substances that come from vegetables like leafy greens, the thicker the pigment.

From Scientific American

“For example, green leafy vegetables are rich sources of phylloquinone, lutein and folate, and berries have great phenolic contents. The combination of these nutrients with antioxidant and anti-inflammatory effects may potentially benefit the brain.”

From Washington Post

“These are all rich in lutein and zeaxanthin, two nutrients that protect your macula,” she says.

From Washington Post

Additional compounds found in pumpkins that support vision health are lutein and zeaxanthin, two plant pigments that help to protect eyes from harmful light waves, according to WebMD.

From Fox News

The tasty nuts also are chock full of antioxidants, including lutein and zeaxanthin, which is good for eye health.

From Seattle Times