極限環境 きょくげんかんきょう Meanings Noun extreme environment Kanji 極 extreme. Read as キョク. 限 limit. Read as ゲン. 環 loop. Read as カン. 境 border. Read as キョウ. Words containing 極限環境 極限環境微生物 (きょくげんかんきょうびせいぶつ) extremophile Jinuma: Japanese Dictionary · Word lists