The condition of having different colors in different parts of the body or changing colors irregularly.
From Greek hetero- (different) + chroma (color) + -y (condition). Similar to heterochromatism, it describes color variation but is more commonly used in biological and medical contexts.
Heterochromy in the iris—where one eye is a completely different color than the other—happens to about 1 in 10,000 people and is usually harmless but absolutely striking!
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