UMBILICUS • DICCIONARIO INGLES.COM • Definition of Umbilicus

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noun

Umbilicus n.

(Anat.) The depression, or mark, in the median line of the abdomen, which indicates the point where the umbilical cord separated from the fetus; the navel; the belly button, in humans.

(Gr. & Rom. Antiq.) An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled.

(Bot.) The hilum.

(Zool.)

(a)

A depression or opening in the center of the base of many spiral shells.

(b)

Either one of the two apertures in the calamus of a feather.

(Geom.)

(a)

One of the foci of an ellipse, or other curve. (Obs.)

(b)

A point of a surface at which the curvatures of the normal sections are all equal to each other. A sphere may be osculatory to the surface in every direction at an umbilicus. Called also umbilic.

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Etymology of 'Umbilicus'

Collaborative International Dictionary of English 0.48

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"Umbilicus" Quotes from Famous Books

... in the restored Triumphal Arch of Titus erected to commemorate the defeat of the Jews A.D. 70, also in the beautiful Arch to Severus. At the end of the Rostra, or Orators' Tribune was the Umbilicus Urbis Romae, or ideal center of Rome and the Roman Empire. True it was that all roads led to Rome. Leo and Lucille visited by moonlight the ruins of the great Colosseum, and the lights and shadows in the huge old stone and brick amphitheater, ...

— The Harris-Ingram Experiment • Charles E. Bolton

... the moist papule (also called mucous patch, flat condyloma) is not uncommon where opposing surfaces and natural folds of skin are subjected to more or less contact, as about the anus, the scroto-femoral regions, umbilicus, axillae and beneath the mammae. The dry, flat papules gradually become moist and covered with a grayish, sticky, mucoid secretion; several may coalesce and form large, flat patches. They may so remain, or they may become hypertrophic, warty or papillomatous, ...

— Essentials of Diseases of the Skin • Henry Weightman Stelwagon