じょうがんじだい 貞観時代 LinksSentence search for 貞観時代Sentence search for じょうがんじだいKanji details for 貞, 観, 時 and 代Edit in JMdict Noun1. Jōgan period (of art history; 859-877 CE)Historical term, See also 弘仁貞観時代 Discussions Log in to talk about this word.