単たん位い元げんMeaningsNoun1. identity element; neutral elementKanji used単single位rank元originComposed of単たん位いunit (e.g. meters, grams, etc.); denomination; unit (i.e. one comprised of many); group; whole; credit (in school, university, etc.); point; by the ...; in units of ...; in groups of ...; …Noun元げんunknown (e.g. in an equation); element (of a set); yuan (monetary unit of China); (Taiwan) dollarNoun