酪氨酸 Traditional form: 酪氨酸 Pinyin (reading): lào'ānsuān Definitions: tyrosine (Tyr), an amino acid Characters: 酪 - cream, cheese; koumiss 氨 - ammonia 酸 - tart, sour; spoiled; acid Traditional characters: 酪 - cream, cheese; koumiss 氨 - ammonia 酸 - tart, sour; spoiled; acid