水杨酸 Traditional form: 水楊酸 Pinyin (reading): shuǐyángsuān Definitions: salicylic acid Characters: 水 - water, liquid, lotion, juice 杨 - willow, poplar, aspen; surname 酸 - tart, sour; spoiled; acid Traditional characters: 水 - water, liquid, lotion, juice 楊 - willow, poplar, aspen; surname 酸 - tart, sour; spoiled; acid