{ } a. [ L. umbilicatus. See Umbilic. ] (a) Depressed in the middle, like a navel, as a flower, fruit, or leaf; navel-shaped; having an umbilicus; as, an umbilicated smallpox vesicle. (b) (Bot.) Supported by a stalk at the central point. [ 1913 Webster ]

n. A slight, navel-like depression, or dimpling, of the center of a rounded body; as, the umbilication of a smallpox vesicle; also, the condition of being umbilicated. [ 1913 Webster ]