Definition of umbilicate in English:

umbilicate

Syllabification: um·bil·i·cate
Pronunciation: /ˌəmˈbilikit, -ˌkāt
 
/

adjective

Botany & Zoology
1(Especially of the cap of a fungus) having a central depression.
1.1(Of a shell) having an umbilicus.
More example sentences
  • The dominant taxa at that time (modal geometries C and D) had compressed, moderately to openly umbilicate shells with slowly expanding whorls, morphologies poorly exploited by Permian goniatitids.
  • Modal geometries C and D appear to represent the tendency for these pioneers, i.e., slowly expanding, moderately to openly umbilicate, compressed shells, typified by Otoceras and Ophiceras.
  • By contrast, a narrowly umbilicate and thin shell possesses slender and dense ornamentation.

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