柠檬酸 Traditional form: 檸檬酸 Pinyin (reading): níngméngsuān Definitions: citric acid Characters: 柠 - lemon 檬 - a type of locust tree 酸 - tart, sour; spoiled; acid Traditional characters: 檸 - lemon 檬 - a type of locust tree 酸 - tart, sour; spoiled; acid