(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.
Ellipsograph
Definition:
(n.) An instrument for describing ellipses; -- called also trammel.
Example Sentences:
(1) In this investigation the evaluation of caries by clinical inspection, bitewing X-rays and ellipsographic survey (Panelipse R) were contrasted.
(2) The results in 112 volunteers showed that the ellipsographic survey almost doubles the detection of caries but does not achieve the detail of bitewing X-rays.