caudad /ˈkɔːdæd/adverb 2adjective 1forms 2 adverb2 •backwards; toward the tail or posterior part •towards the feet (only in humans); inferior. adjective1 •Synonym of caudal.From within the cephalad and caudad extremities of the valves numerous hairs protrude. — 1888 formsmore caudad · most caudad