丙氨酸 Traditional form: 丙氨酸 Pinyin (reading): bǐng'ānsuān Definitions: alanine (Ala), an amino acid Characters: 丙 - third; 3rd heavenly stem 氨 - ammonia 酸 - tart, sour; spoiled; acid Traditional characters: 丙 - third; 3rd heavenly stem 氨 - ammonia 酸 - tart, sour; spoiled; acid