微分積分学 びぶんせきぶんがく Meanings Noun calculus See also: 微積分 (びせきぶん). Kanji 微 slight. Read as ビ. 分 part. Read as ブン. 積 pile up. Read as セキ. 学 study. Read as ガク. Word lists Mathematics Jinuma: Japanese Dictionary · Word lists