無む脊せき椎つい動どう物ぶつむせきついどうぶつMeanings1nouninvertebratezoologyZoological term for animals without a backbone. Often contrasted with 脊椎動物 (vertebrate).See also: 脊椎動物昆こん虫ちゅうは無む脊せき椎つい動どう物ぶつの一いっ種しゅです。Insects are a type of invertebrate.
