en.wiktionary.org底棲生物 - Wiktionary, the free dictionary From Wiktionary, the free dictionary Kanji in this term 底 棲 生 物 ていGrade: 4 せいJinmeiyō せいGrade: 1 ぶつGrade: 3 on'yomi For pronunciation and definitions of 底棲生物 – see the following entry. (This term, 底棲生物, is an alternative spelling (less common) of the above term.)