All the planets and their satellites move in ellipses of such small eccentricity that they are nearly circles.
Hence the probability that all the orbits are ellipses is overwhelming.
Comets moving in ellipses remain permanently within the limits of solar influence.
They are ovals, or, to speak in technical language, "ellipses."
The difference in the sizes of the ellipses arises from the different distances of the stars from the earth.
The ellipses of the planets have been and always will be nearly circular.
It must not be imagined, however, that all comets revolve about the sun even in the most lengthened ellipses.
That the planets move in ellipses, of which the sun is in one of the foci.
It will be instructive to draw a number of ellipses, varying in each case the circumstances under which they are formed.
Some ellipses are more beautiful in their proportions than others.
1753, from French ellipse (17c.), from Latin ellipsis "ellipse," also, "a falling short, deficit," from Greek elleipsis (see ellipsis). So called because the conic section of the cutting plane makes a smaller angle with the base than does the side of the cone, hence, a "falling short." First applied by Apollonius of Perga (3c. B.C.E.).
1560s, "an ellipse," from Latin ellipsis, from Greek elleipsis "a falling short, defect, ellipse," from elleipein "to fall short, leave out," from en- "in" + leipein "to leave" (see relinquish). Grammatical sense first recorded 1610s.
A closed, symmetric curve shaped like an oval, which can be formed by intersecting a cone with a plane that is not parallel or perpendicular to the cone's base. The sum of the distances of any point on an ellipse from two fixed points (called the foci) remains constant no matter where the point is on the curve.
A punctuation mark (&ellipsis;) used most often within quotations to indicate that something has been left out. For example, if we leave out parts of the above definition, it can read: “A punctuation mark (&ellipsis;) used most often &ellipsis; to indicate&ellipsis4;”
In geometry, a curve traced out by a point that is required to move so that the sum of its distances from two fixed points (called foci) remains constant. If the foci are identical with each other, the ellipse is a circle; if the two foci are distinct from each other, the ellipse looks like a squashed or elongated circle.