天てん仁にんてんにんMeanings1nounTennin era (1108.8.3–1110.7.13)historical termA Japanese historical era name (年号) from the late Heian period, spanning roughly two years.天てん仁にんは平へい安あん時じ代だい後こう期きの年ねん号ごうの一ひとつである。Tennin is one of the era names of the late Heian period.