一極集中 いっきょくしゅうちゅう Meanings Noun overconcentration (esp. of population, cultural and political institutions, etc. in Tokyo); heavy concentration Kanji 一 one. Read as イチ. 極 extreme. Read as キョク. 集 gather. Read as シュウ. 中 middle. Read as チュウ. Jinuma: Japanese Dictionary · Word lists