乾けん元げんけんげんMeanings1nounKengen era (1302.11.21–1303.8.5)historical termHistorical Japanese era name (年号) of the late Kamakura period. Used only in historical contexts.乾けん元げんは鎌かま倉くら時じ代だい後こう期きの元げん号ごうの一ひとつである。Kengen is one of the era names of the late Kamakura period.