(n.) An oval or oblong figure, bounded by a regular curve, which corresponds to an oblique projection of a circle, or an oblique section of a cone through its opposite sides. The greatest diameter of the ellipse is the major axis, and the least diameter is the minor axis. See Conic section, under Conic, and cf. Focus.
(n.) Omission. See Ellipsis.
(n.) The elliptical orbit of a planet.
Example Sentences:
(1) The authors have presented in two previous articles the graphic solutions resembling Tscherning ellipses, for spherical as well as for aspherical ophthalmic lenses free of astigmatism or power error.
(2) The Ta loop was a smooth, elongated ellipse in configuration and showed clockwise rotation in all planes, as did the P loop.
(3) Eighty degrees further forward, along the minor axis, was the crank arm orientation for the second ellipse, Eng90.
(4) A calculation for the correct circumference of an ellipse is proposed using the simple formula for a circle times a correction factor.
(5) Results show that the 3-D disc is mostly preceded by impressions of elastic amoeba-like deformations, whereas the 3-D egg is mostly preceded by the percept of a rotating flat ellipse.
(6) The lumina of most nonrespiratory bronchioles from normal lungs conformed closely to their respective ellipses, thus corroborating previous observations that they are normally cylindroid.
(7) Using a carbon dioxide laser, an ellipse of conjunctival-tarsal-inferior muscle tissue was excised from the inner surface of the ectropic lid inferior to the punctum.
(8) The lateral margins and base of transverse sections through the ellipse were free of tumor.
(9) Three commonly used prostate volume measurement techniques were analyzed: planimetry, prolate ellipse volume calculation (HWL), and an ellipsoid volume measurement technique.
(10) In this article four additional ideas are reviewed to improve the final cosmetic result of the ellipse.
(11) The shapes of the ellipses obtained characterized the rheological properties of each bronchial mucus sample before and after treatment.
(12) The long-term surgical outcome as determined by sexual function indicated that the penile prosthesis group remained the most sexually active, followed by the Nesbit ellipse group with the tunica vaginalis graft group being the least sexually active.
(13) With a set of discrete basic elements (cell nuclei) having several measurable features (area, surface, main and minor axis of best-fitting ellipses) a graph is defined as having attributes associated with edges.
(14) In all cases significant variations of the posturographic parameters regarding in a particular way the total tracing length, the ellipse surface and the mean speed have been recorded.
(15) The corneo-limbal ring (CLR) is defined here as the best fitting ellipse within the limbal region and characterized by the horizontal diameter (Dh), the vertical diameter (Dv), the eccentricity (e), and the circumference (O).
(16) These solutions, as expected, resemble the Tscherning ellipses, but strongly deformed.
(17) Two-year-old children received intradimensional discrimination training at initially distant points on a circle-ellipse continuum.
(18) Genioglossal muscle shortening increases pharyngeal area and reduces pharyngeal resistance more effectively when the pharynx is elliptical, with the long axis of the ellipse oriented laterally.
(19) The area of the stenosis by the edge detection method was calculated by analyzing two orthogonal projections for irregular stenoses and with use of the formula for the area of an ellipse (ellipse method).
(20) In children aged 3 years the shape of the upper dental arch was in most cases similar to a semi-ellipse and that of the lower arch approached parabole.
Umbilicus
Definition:
(n.) 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.
(n.) An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled.
(n.) The hilum.
(n.) A depression or opening in the center of the base of many spiral shells.
(n.) Either one of the two apertures in the calamus of a feather.
(n.) One of foci of an ellipse, or other curve.
(n.) 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.
Example Sentences:
(1) Chemically isolated separate preparations of the non-aggregating protein-chondroitin-keratin sulphate (PCKS) fraction from the hyaline cartilage and hyaluronic acid (HUA) of the vitreous body and of the umbilicus were investigated by electron microscopy.
(2) Cultures were collected from the external ear, throat and umbilicus of all infants within 5 minutes of birth and at day 4 of life.
(3) Pneumoperitoneum may be indicated in the investigation of a bleeding Meckel's diverticulum, in the exclusion or confirmation of remnants of the omphalomesenteric duct, in chronically moist lesions of the umbilicus resistant to symptomatic treatment, in suspected cases of non-communicating urachal cysts which cannot be diagnosed by cystogram, and in the differential diagnosis of abdominal tumours related to the umbilical region.
(4) Faecal specimens were cultured daily for E. coli as were swabs from the rectum, groin, umbilicus, head, hands und mouth.
(5) The only consistent pattern distribution was that mff were recovered from all 10 hides at four sample sites along the ventral midline near the umbilicus.
(6) A lace used in obstetrics for ligation of umbilicus served as the tourniquet.
(7) Cultures were taken from the catheter tips and from the umbilicus at the time of withdrawal of the catheter.
(8) Plasma arginine vasopressin was more than 5 times greater 15 min following birth than immediately prior to clamping the umbilicus, and it fell progressively over the ensuing 2-5 h to levels not significantly different from before birth.
(9) The masculinisation of the external genitalia begins as early as day 47 by a rapid increase of the anogenital distance: on day 60, the penis opens under the umbilicus and the scrotum is well differentiated.
(10) A pooling of contrast medium (8 X 2.5 cm) under the umbilicus was detected by a fistelography from the umbilicus, and a low density mass was detected under the abdominal wall between the umbilicus and the dome of bladder on a CT scan.
(11) Complete removal of the skin and fat between the umbilicus and the pubis is always possible if the operating table is put in a proper position for closure.
(12) Two additional trocars were inserted at the level of the umbilicus at the anterior axillary lines.
(13) Massive hepatomegaly (below the umbilicus) was demonstrated in 18 patients.
(14) In one case a mass was localized to the bladder wall and immediate juxtavesical region; in the other case an advanced locally invasive lesion was seen to engulf and fisulize loops of small bowel and extend through the umbilicus.
(15) The defect concerned the lateral thoracoabdominal area, on both sides of the umbilicus, jointed with a fine linear communication, and have the classical butterfly wind-like shape.
(16) The ligamentum teres hepatis connects the umbilicus to the left lobe of the liver, and thus a hepatic lesion can spread through the ligament to the umbilicus and the anterior abdominal wall.
(17) The skin at the bottom of the umbilicus and the abdominal fascia under the umbilicus were excised round.
(18) Our procedure uses a single flap or brings two flaps together, to form a three-dimensional structure with a single or double suture line, so that the umbilicus will retain its depth over a long period of time.
(19) The umbilicus was not reconstructed because of the danger of recurrence.
(20) Necropsy of the fetuses revealed serogelatinous edema in the SC connective tissue of the ventral abdominal region (especially around the umbilicus), exaggerated amounts of serohemorrhagic fluid in the abdominal, pleural, and pericardial cavities, and hemorrhagic kidneys, with diminished consistency.