胺基酸 Traditional form: 胺基酸 Pinyin (reading): ànjīsuān Definitions: amino acid also written 氨基酸 Characters: 胺 - amine 基 - foundation, base 酸 - tart, sour; spoiled; acid Traditional characters: 胺 - amine 基 - foundation, base 酸 - tart, sour; spoiled; acid