Etymology of the Latin word Cephalochordata
the New Latin word Cephalochordata
using the Latin prefix cephalo-
derived from the Greek prefix kephalo-, κεϕαλο-
derived from the Late Greek word kephale, κεφαλή (head; the head (as the part most readily taken hold of), literally or figuratively)
derived from the Proto-Indo-European root *ghebh-el-