研鑽を積む けんさんをつむ Also written 研鑚を積む Meanings Expression, Godan verb to apply oneself (to one's studies, research, etc.); to devote oneself to study; to pursue one's studies with dedication Kanji 研 research. Read as ケン. 鑽 make fire by rubbing sticks. Read as サン. 積 pile up. Read as つむ. Jinuma: Japanese Dictionary · Word lists