むせきついどうぶつ
noun
invertebrate; invertebrate animal
academicanimal-general
1. invertebrate; invertebrate animal
An animal that has no backbone, such as an insect, mollusk, or worm. Contrasts with 脊椎動物(せきついどうぶつ) (vertebrate).
昆虫(こんちゅう)無脊椎動物(むせきついどうぶつ)だ。
Insects are invertebrates.
(うみ)(おお)無脊椎動物(むせきついどうぶつ)()んでいる
Many invertebrates live in the sea.
地球上(ちきゅうじょう)動物(どうぶつ)大部分(だいぶぶん)無脊椎動物(むせきついどうぶつ)である
The great majority of animals on Earth are invertebrates.

Formed from () (without) + 脊椎(せきつい) (spine) + 動物(どうぶつ) (animal). A biology term.

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