蛋氨酸 Traditional form: 蛋氨酸 Pinyin (reading): dàn'ānsuān Definitions: methionine (Met), an essential amino acid Characters: 蛋 - egg 氨 - ammonia 酸 - tart, sour; spoiled; acid Traditional characters: 蛋 - egg 氨 - ammonia 酸 - tart, sour; spoiled; acid