脯氨酸 Traditional form: 脯氨酸 Pinyin (reading): pú'ānsuān Definitions: proline (Pro), an amino acid Characters: 脯 - dried meat; preserved fruits 氨 - ammonia 酸 - tart, sour; spoiled; acid Traditional characters: 脯 - dried meat; preserved fruits 氨 - ammonia 酸 - tart, sour; spoiled; acid