umbilicated

They increase in size by extending peripherally, but are more or less flattened and umbilicated, and are without conspicuous areola.

From Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine by Henry Weightman Stelwagon

Shell oval, whitish, banded with orange lines; spire obsolete, umbilicated; pillar 6 plaited.

From Zoological Illustrations, Volume II or Original Figures and Descriptions of New, Rare, or Interesting Animals by William Swainson

When fully developed they are somewhat flattened and umbilicated, with a central, darkish point representing the mouth of the follicle.

From Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine by Henry Weightman Stelwagon

The pustules on the fetus were well umbilicated and typical, and could have been nothing but those of small-pox; besides, this disease was raging in the neighborhood at the time.

From Anomalies and Curiosities of Medicine by Walter L. (Walter Lytle) Pyle

The leaf is almost round, green on the upper side and whitish underneath, with several fibres running from the insertion of the pedicule towards the circumference, it is umbilicated as Cotyledon aquatica and Faba Aegyptia.

From A Voyage to New Holland by William Dampier