脊索動物 せきさくどうぶつ Meanings Noun chordate Kanji 脊 spine. Read as セキ. 索 seek. Read as サク. 動 move. Read as ドウ. 物 thing. Read as ブツ. Words containing 脊索動物 脊索動物門 (せきさくどうぶつもん) Chordata (phylum of deuterostome animals) Jinuma: Japanese Dictionary · Word lists