極中間圏雲 きょくちゅうかんけんうん Meanings Noun polar mesospheric clouds Kanji 極 extreme. Read as キョク. 中 middle. Read as チュウ. 間 interval. Read as カン. 圏 sphere. Read as ケン. 雲 cloud. Read as ウン. Jinuma: Japanese Dictionary · Word lists