脊せき索さく動どう物ぶつ

noun

chordate

Zoological term for animals possessing a notochord at some stage of development, including vertebrates and some invertebrates.

• ヒトは脊せき索さく動どう物ぶつに分ぶん類るいされる。

  Humans are classified as chordates.

• 脊せき索さく動どう物ぶつの特とく徴ちょうとして、発はっ生せいの過か程ていで脊せき索さくが形けい成せいされる。

  A characteristic of chordates is that a notochord forms during development.