umbilicated

adjective

um·​bil·​i·​cat·​ed ˌəm-ˈbil-ə-ˌkāt-əd 

variants or umbilicate

-kət 

: having a small depression that resembles a navel

umbilicated vesicles

umbilicate

-ˌkāt 

intransitive verb

umbilicated; umbilicating