高こう層そう階かいMeaningsNoun1. upper floor (of a high-rise building)Kanji used高high層layer階floor (of a building)Composed of高こう層そうhigh-rise (building); multistory; multistoried; tall; high (altitude); upper (atmosphere, air current, etc.)No-adjective階かいstorey; story; floor; stairs; stage (in chronostratigraphy); counter for storeys and floors of a buildingNoun