脊索动物门 jǐsuǒdòngwùmén Chordata Origin Definitions Defs Strokes Stroke Words Sentences Sents 脊索动物 脊索動物 jǐsuǒdòngwù chordate Animal belonging to the phylum Chordata, characterized by having a notochord at some stage of development; includes tunicates, lancelets, and all vertebrates.门 門 mén phylum phylum or division in biological taxonomy