成せい層そう圏けんTop 25000MeaningsNoun1. stratosphereKanji used成become層layer圏area of influencePitch accentせいそうけんUsed in vocabulary亜あ成せい層そう圏けんsubstratosphereNoun成せい層そう圏けん飛ひ行こう機きstratoplane (hypothetical type of airplane)Noun