微び分ぶん積せき分ぶん学がくMeaningsNoun1. calculusKanji used微micro分part積pile up and accumulate学studyComposed of微び分ぶんdifferentiation; differential; derivativeNoun積せき分ぶんintegration; integralNoun学がくlearning; scholarship; study; erudition; knowledge; education; study of ...; -ology; -icsNoun