occipital UK /ɒkˈsɪp.ɪt.əl/US /ɑkˈsɪp.ət.l̩/adjective 1noun 2forms 1 adjective1 •Of, pertaining to, or located within or near the occiput (back of the head) or the occipital bone. noun2 •An occipital scale in reptiles. •Ellipsis of occipital bone. formsoccipitals