延坪 のべつぼ Also written 延べ坪 Meanings Noun total floor space (incl. all floors) See also: 坪 (つぼ). See also: 建坪 (たてつぼ). Kanji 延 prolong. Read as のべる. 坪 tsubo. Read as つぼ. Jinuma: Japanese Dictionary · Word lists