三国時代 さんごくじだい Meanings Noun Three Kingdoms period (of Chinese history, 220 CE-280 CE) See also: 三国 (さんごく). Three Kingdoms period (of Korean history, 57 BCE-668 CE) See also: 三国 (さんごく). Kanji 三 three. Read as サン. 国 country. Read as コク. 時 time 代 era. Read as ダイ. Jinuma: Japanese Dictionary · Word lists