noun.
Any of several yellow carotenoid pigments, including lutein and zeaxanthin, produced by plants and green algae and visible in the leaves of deciduous trees in the autumn. Xanthophylls are also present in some animal tissues such as egg yolks.
the GNU version of the Collaborative International Dictionary of English
noun.
A yellow coloring matter found in yellow autumn leaves, and also produced artificially from chlorophyll; -- formerly called also phylloxanthin.
noun.
Any of various hydroxy, carbonyl or carboxylic acid derivatives of carotenes.
noun.
Alternative name for lutein.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
yellow carotenoid pigments in plants and animal fats and egg yolks
Word Usage
"Seasonal changes in chlorophyll fluorescence quenching and the induction and capacity of the photoprotective xanthophyll cycle in Lobaria pulmonaria."