腎じん単たん位いMeanings1nounnephronrare termRare medical term; the loanword ネフロン is far more common in modern Japanese.See also: ネフロン腎じん単たん位いは腎じん臓ぞうの基き本ほん的てきな機き能のう単たん位いである。The nephron is the basic functional unit of the kidney.