IPA: //ʌmˈbɪlɪkeɪt//
KK: /ʌmˈbɪlɪkeɪt/
Describing something that has a central mark or depression similar to a navel.
The flower's petals were umbilicate, creating a unique appearance.
Umbilicate → It is formed from "umbilicus" (meaning navel or belly button) and the suffix "-ate" (indicating to make or to become). The word "umbilicate" means to make or become navel-like or to have a navel-like depression.
Think of the word 'umbilicus' which refers to the navel, and remember that 'umbilicate' describes something that resembles or has a navel-like feature.