Lipochrome
Encyclopedia
Lipochrome is a form of pigment
Pigment
A pigment is a material that changes the color of reflected or transmitted light as the result of wavelength-selective absorption. This physical process differs from fluorescence, phosphorescence, and other forms of luminescence, in which a material emits light.Many materials selectively absorb...

 associated with amber and gold tones in human eyes and the eyes of other mammals.

The term carotenoid
Carotenoid
Carotenoids are tetraterpenoid organic pigments that are naturally occurring in the chloroplasts and chromoplasts of plants and some other photosynthetic organisms like algae, some bacteria, and some types of fungus. Carotenoids can be synthesized fats and other basic organic metabolic building...

is sometimes considered a synonym, but that term usually refers to specific molecules, while lipochrome refers to accumulations of varied molecules.
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