"division of the animal kingdom including the true vertebrates," 1880, Modern Latin, from neuter plural of Latin chordatus "having a (spinal) cord," from chorda "cord, string" (from PIE root *ghere- "gut, entrail").
chops
chopstick
choral
chorale
chord
Chordata
chordate
chore
chorea
choreograph
choreographer
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}