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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



... stem is somewhat cartilaginous, hollow, and, what is more important, the gills are more or less decurrent, broad next to the stem, and thus more or less triangular in outline. It is related to Naucoria and Galera, but differs in the decurrent gills. The pileus is convex, or with an umbilicus. ...
— Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. • George Francis Atkinson

... think that he had been selected as the intermediary in this secret romance. Clasping the bouquet in his grimy left hand, he bowed low and placed his equally grimy right in the region of his umbilicus. ...
— Kindred of the Dust • Peter B. Kyne

... appendicitis the American profession has taken the lead, and the mention of this disease brings to mind such names as McBurney, whose name is given to an anatomical point—McBurney's Point—midway between the right anterior superior spine of the ileum and the umbilicus, Deaver of Philadelphia, and Ochsner and Murphy of Chicago. Those who are interested in the surgical treatment of the disease can look into the methods of these men, and many others. The medical literature of the day abounds in exhaustive treatises ...
— Appendicitis: The Etiology, Hygenic and Dietetic Treatment • John H. Tilden, M.D.

... of the calorimeter it is possible to count the beats of the heart without difficulty. The respiration rate is determined by attaching a Fitz pneumograph about the trunk, midway between the nipples and the umbilicus. The excursions of the tambour pointer as recorded on the smoked paper of the kymograph give a true picture of the ...
— Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man • Francis Gano Benedict

... clouds have become fixed in the heavens, The pointed clouds grow quiet like one in pain before childbirth, Ere it comes raining heavily, without ceasing. The umbilicus of the rain is in the heavens, The streams will yet be ...
— The Hawaiian Romance Of Laieikawai • Anonymous

... create a new liberal education in this way, and cut the umbilicus of the classical languages for good and all. I should have set this going, and trusted it to correct or kill the old public schools and the Oxford and Cambridge tradition altogether. I had men in my mind to begin the work, and I should have found others. I should have aimed at making ...
— The New Machiavelli • Herbert George Wells

... Compare Section 32. The allantois altogether disappears in the adult fowl; in the adult mammal a portion of its hollow stalk remains as the urinary bladder, and the point where it left the body is marked by the umbilicus or navel. The umbilical arteries become the small hypogastric arteries on either side of the urinary bladder. There is no trace of a pronephros at all in ...
— Text Book of Biology, Part 1: Vertebrata • H. G. Wells

... Umbilicus Chrysanthus.—This little Alpine plant should occupy a warm, sheltered, and dry situation, and be protected with an overhead screen in wet seasons. The soil it most enjoys is a mixture of peat and coarse sand. Its procumbent ...
— Gardening for the Million • Alfred Pink

... was not allowed to eat salt until the baby's umbilicus dropped off, usually in two or three days. The umbilicus was dried and hung on the right side of the cradleboard to insure that the ...
— Washo Religion • James F. Downs

... the street corner and read out from the soiled copy retrieved by Chunky, the newsboy, the enthralling story of the football day, never stumbling over a syllable, athrill with the joy of being the umbilicus of a tense world, and, when the recital was over, he would have the mortification of seeing the throng pass away from him with the remorselessness of a cloud scudding from the moon. And he would hear ...
— The Fortunate Youth • William J. Locke



Words linked to "Umbilicus" :   belly, omphalos, stomach, abdomen, omphalus, vesicula umbilicus, venter, umbilical, bellybutton, belly button



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