極きょく限げん環かん境きょう微び生せい物ぶつMeaningsNoun1. extremophile; organism that thrives in extreme conditionsKanji used極extreme限limit環loop境border微micro生life物thingComposed of極きょく限げんutmost limits; extremity; limitNoun環かん境きょうenvironment; surroundings; circumstancesNoun微び生せい物ぶつmicrobe; germNoun