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 (ŭm-bĭl′ĭ-kĭt) also um·bil·i·cat·ed (-kā′tĭd)
1. Having a central mark or depression resembling a navel.
2. Having a navel.

um·bil′i·ca′tion n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Biology) biology anatomy a navel-like notch or depression, as in the centre of a vesicle
2. (Biology) the condition of being umbilicated
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
(2) In patients with HIV infection, the clinical aspect of the lesions may be atypical, presenting as generalized papules with central umbilication, macules or perforating annular lesions rather than an annular configuration.
The rash was locally synchronous and had progressed from maculopapular to vesicular and pustular; some lesions displayed black umbilication and crusting (Figure 1, panels C, D).
(22) The endoscopic appearance of pancreatic heterotopia is that of a small nondescriptive nodule covered by normal duodenal mucosa, often with central umbilication corresponding to the opening of the main duct.
Varicella usually involves the face before spreading to the extremities, and the lesions are characterized by umbilication and subsequent crusting.
Clinically, diverse cutaneous lesions--erythema and erythematouswhitish or erythematous-purplish papules--may be noticed which later on break to form umbilication and crust formation leaving hypochromic scars [17].
After the admission, the patient underwent diagnostic endoscopic study which showed a 5 cm x 6 cm antral submucosal mass with central umbilication. The mass was causing gastric outlet obstruction.
Dermatology exam showed an indurated nodule with central umbilication covered by crust and surrounded by a reddish halo (Figure 1(b)).
Lesions caused by MC are small, discrete, waxy dome-shaped papules with central umbilication that are usually 3 to 5 mm in diameter (figure 5).
An EGD with endoscopic ultrasound was performed at our institution, which redemonstrated the 3.5 cm subepithelial hypoechoic gastric mass that appeared to arise from the gastric muscular wall with central umbilication and ulceration (Figures 1(a)-1(d)).
In our study we found that the burn patients developed fluid-filled monomorphic vesicles with later central umbilication. After searching the literature and considering our own findings, we strongly believe that sudden appearance of fluid-filled monomorphic lesions on burn area with later central umbilication along with unexplained fever could be a sign of EH.
Physical examination revealed two indurated nodules 8-mm and 10-mm in diameter, each with central umbilication and surrounded by a reddish halo [Figure 1]a.
In immunocompetent persons, the molluscum lesions typically appear as painless, flesh-colored or skin-coloured, dome shaped papules of size 2-3mm with central umbilication that can appear anywhere on the body, but most often located on the face, neck and intertriginous sites like axilla and popliteal fossa.