noun, plural um·bil·i·ci [uhm-bil-uh-sahy, uhm-buh-lahy-sahy] /ʌmˈbɪl əˌsaɪ, ˌʌm bəˈlaɪ saɪ/.
Origin of umbilicus
Examples from the Web for umbilicus
Historical Examples of umbilicus
In this case the shell is said to be umbilicated, and the opening referred to is the umbilicus.
The other (T. zizyphinus) is usually of a yellowish or pink colour and has no umbilicus.
With umbilicus reaching to the apex; including Bifrontia and Orbis.A Conchological Manual
George Brettingham Sowerby
When the coils of the shell are very compact there is no umbilicus to be seen.
The umbilicus is partially closed by an entering callous plug.
noun plural -bilici (-ˈbɪlɪˌsaɪ, -bɪˈlaɪsaɪ)
Word Origin for umbilicus
"navel," 1610s, from Latin umbilicus "navel," from PIE root *(o)nobh- "navel" (see navel). In English, mostly confined to medical writing. Latin umbilicus is source of Spanish ombligo as well as Old French lombril, literally "the navel," from l'ombril, which by dissimilation became modern Fr. nombril (12c.).