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Umbilicus   Listen
noun
Umbilicus  n.  
1.
(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.
2.
(Gr. & Rom. Antiq.) An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled.
3.
(Bot.) The hilum.
4.
(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.
5.
(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.






Collaborative International Dictionary of English 0.48








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"Umbilicus" Quotes from Famous Books



... her 8th month, she was washing some linen, and suddenly felt as if something was tearing in her abdomen; at the same time, a swelling of the size of two fists (poings) formed on the right side, below the umbilicus. She fainted, and for six weeks suffered dull pains in the abdomen. At this time, she had true labour pains for 48 hours, and was attended by a midwife. The os uteri dilated so as to admit one finger only. The tumour disappeared during these pains. The patient recovered, with the ...
— North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826 • Various

... is one to three lines broad, hemispherical, umbilicate, and minutely umbonate, plaited, smooth, membranaceous, margin crenate, white, or pale buff, with a dark umbilicus. ...
— The Mushroom, Edible and Otherwise - Its Habitat and its Time of Growth • M. E. Hard

... central angle, the upper ones ascending, the lower pendulous. Style trifid, stigmas three, acute. Capsule spheroidal, 1-7-lobed with loculicidal dehiscence, or with dessepiments formed from the turned-in edges of the valves. Seeds solitary, or two in cells, shell-like testa, marked with the ventral umbilicus. Cotyledons thick, fleshy, oily, no albumen. Radicle very short, very near the umbilicus centripetal. In the plantations there are two species, ...
— The Commercial Products of the Vegetable Kingdom • P. L. Simmonds

... UMBILICAL HERNIA.—The umbilicus, or navel, is the aperture through which the blood vessels pass from the mother to the fetus, and naturally the sides of this aperture ought to adhere or unite after birth. In very young animals, and sometimes in newborn calves, ...
— Special Report on Diseases of Cattle • U.S. Department of Agriculture

... of the skin, producing redness, burning and itching pains, appearing in patches, in adults, most apt to appear about the head and face, but in children, upon the limbs, or in very young children, beginning at the umbilicus. It sometimes begins at one point, and continues to spread for a time, then suddenly disappears, and reappears ...
— An Epitome of Homeopathic Healing Art - Containing the New Discoveries and Improvements to the Present Time • B. L. Hill



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