um·bil·i·cate \|əm|bilə̇kə̇t, -ləˌkāt, usu -d.+V\adjective orum·bil·i·cat·ed\-lə|kād.ə̇d\ Etymology:umbilicate from Latin umbilicatus, from umbilicus navel + -atus -ate; umbilicated from Latin umbilicatus + English -ed 1.: resembling a navel; specifically: depressed like a navel 2.of a mollusk shell: perforate