Definition of xanthophyll in English:

xanthophyll

noun

mass nounBiochemistry
  • A yellow or brown carotenoid plant pigment which causes the autumn colours of leaves.

    • ‘Retinal xanthophyll is a carotenoid, chemically related to vitamin A, whose absorption spectrum peaks at about 460 nm and ranges from 480 nm down to 390 nm.’
    • ‘Concentrations of total carotenoids and total xanthophyll were greater for plants grown at low temperature.’
    • ‘There is now an extensive literature based on in vivo and in vitro studies that deal with mechanistic aspects of xanthophyll pigment-dependent photoprotection.’
    • ‘Remove both chlorophyll and the yellow pigment xanthophyll and the variegation is white.’
    • ‘These are chlorophyll's shy cousins, the yellow pigment xanthophyll and the red-orange carotene.’

Origin

Mid 19th century: from Greek xanthos ‘yellow’ + phullon ‘leaf’.

Pronunciation

xanthophyll

/ˈzanθə(ʊ)fɪl/