赖氨酸 Traditional form: 賴氨酸 Pinyin (reading): lài'ānsuān Definitions: lysine (Lys), an essential amino acid Characters: 赖 - to depend on, to rely on; to bilk, to deny; poor 氨 - ammonia 酸 - tart, sour; spoiled; acid Traditional characters: 賴 - to depend on, to rely on; to bilk, to deny; poor 氨 - ammonia 酸 - tart, sour; spoiled; acid