noun Biochemistry.
lutein ( def 1 ).
Also, xanthophyl.

1830–40; < French xanthophylle. See xantho-, -phyll

xanthophyllous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To xanthophyll
World English Dictionary
xanthophyll or xanthophyl (ˈzænθəʊfɪl)
any of a group of yellow carotenoid pigments occurring in plant and animal tissue
xanthophyl or xanthophyl
xantho'phyllous or xanthophyl

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
xanthophyll   (zān'thə-fĭl')  Pronunciation Key 
Any of various yellow pigments occurring in the leaves of plants and giving young shoots and late autumn leaves their characteristic color. This color is masked by chlorophyll when the leaf is mature. Xanthophylls aid in the absorption of light by capturing certain wavelengths not captured by chlorophyll and rapidly transferring the energy to chlorophyll by boosting one of its electrons to a higher energy level. Xanthophylls are carotenoids, differing from carotenes in having one or more oxygen-containing groups attached. See also carotene.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences for xanthophyll
The exact color of a yolk depends on the source of the xanthophyll.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature