天てん禄ろくてんろくMeanings1nounTenroku era (970.3.25–973.12.20)A Japanese era name (年号) from the Heian period. Used in historical contexts.天てん禄ろく元がん年ねんは西せい暦れき970年ねんにあたる。The first year of the Tenroku era corresponds to 970 CE.