cephalochordateEtymologyFrom taxonomic name Cephalochordata, by surface analysis, cephalo- + chordate.cephalochordate means of or pertaining to these creatures. Lexicurio rates it Sui generis — a strength score of 87 out of 100.adjOf or pertaining to these creatures.nounAny of the primitive fishlike creatures, of the subphylum Cephalochordata, including the lancelets, that lack a true spine but have a notochord which, in the case of cephalochordates, reaches into the head, contrary to the Urochordata