Xantho-

a combining form meaning “yellow,” used in the formation of compound words:
xanthophyll.
combining form
indicating yellow: xanthophyll

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Xanthochroid
adjective (rare) of, relating to, or designating races having light-coloured hair and a pale complexion
Xanthochroism
noun a condition in certain animals, esp aquarium goldfish, in which all skin pigments other than yellow and orange disappear
Xanthochromia
xanthochromia