Chordata

n. phylum that comprises the chordates

Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. They are united by having, at some time in their life cycle, a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail. Some scientists argue that the true qualifier should be pharyngeal pouches rather than slits.
See more at Wikipedia.org...

Noun
1. comprises true vertebrates and animals having a notochord
(synonym) phylum Chordata
(hypernym) phylum
(member-holonym) Animalia, kingdom Animalia, animal kingdom
(member-meronym) chordate

(n. pl.)
A comprehensive division of animals including all Vertebrata together with the Tunicata, or all those having a dorsal nervous cord.
  

A major phylum in the Kingdom Animalia.