水蛭素 Traditional form: 水蛭素 Pinyin (reading): shuǐzhìsù Definitions: hirudin Characters: 水 - water, liquid, lotion, juice 蛭 - leech 素 - plain; white; vegetarian; formerly; normally Traditional characters: 水 - water, liquid, lotion, juice 蛭 - leech 素 - plain; white; vegetarian; formerly; normally