組氨酸 Save Sign in to save words Simplified: 组氨酸 zǔānsuān ㄗㄨˇ ㄢ ㄙㄨㄢ histidine (His), an essential amino acid Character by character 組(zǔ)form 氨(ān)ammonia 酸(suān)sour A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0