borrowed from Latin umbilīcātus "having a navel-like depression," from umbilīcus "navel, central point" + -ātus -ate entry 3 — more at umbilicus
1698, in the meaning defined at sense 1
“Umbilicate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/umbilicate. Accessed 11 Dec. 2023.
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