延えん暦りゃくえんりゃくMeanings1nounEnryaku eraJapanese era name spanning 782–806 CE. Used in historical contexts.延えん暦りゃく年ねん間かんに最さい澄ちょうが比ひ叡えい山ざん延えん暦りゃく寺じを開ひらいた。Saichō founded Enryaku-ji on Mount Hiei during the Enryaku era.