Definitions

1. noun

A type of melanin found in the hair, skin, and eyes of animals, produced by the action of the enzyme tyrosinase on the amino acid tyrosine.

“The pigmentation in the horse’s coat was caused by the presence of eumelanin.”

2. noun

A type of melanin found in the hair, skin, and eyes of people, produced by the action of the enzyme tyrosinase on the amino acid tyrosine.

“The amount of eumelanin in the person’s skin determined their natural skin color.”