Search the dictionary A Chinese word or character, or English Search 6 entries. jīfēn 积分 integral (calculus) jīfēn 積分 integral (calculus) jǐfēn 几分 somewhat jǐfēn 幾分 somewhat wēijīfēn 微积分 calculus (branch of mathematics) wēijīfēn 微積分 calculus (branch of mathematics)