上じょう層そう階かいMeaningsNoun1. upper floor (of a building)Kanji used上above層layer階floor (of a building)Composed of上じょう層そうupper stratum (classes, stories, storeys); upper layer; layer aboveNoun階かいstorey; story; floor; stairs; stage (in chronostratigraphy); counter for storeys and floors of a buildingNoun