Xanthochroism

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Xanthochroism \Xan*thoch"ro*ism\, n.
     Abnormal coloration of feathers in which yellow replaces the
     normal color, as in certain parrots. It is commonly due to
     lack of the dark pigment which with yellow forms green.
     [Webster 1913 Suppl.]