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What is the noun for ellipse?

What's the noun for ellipse? Here's the word you're looking for.

ellipsis

(typography) A mark consisting of three periods, historically with spaces in between, before, and after them “ . . . ”, nowadays a single character “…” Ellipses are used to indicate that words have been omitted in a text or that they are missing or illegible.
(grammar) The omission of a grammatically required word or phrase that can be inferred.
(film) The omission of scenes in a film that do not advance the plot.
Synonyms:

Examples:

“This phenomenon is known as ellipsis and often occurs when clauses are conjuncted.”

“Please add an ellipsis at the end of the sentence to indicate an unfinished thought.”

“The ellipsis is included to indicate the presence of the dramatic and disturbing pause.”

ellipsoid

(mathematics) A surface, all of whose cross sections are elliptic or circular (including the sphere), that generalises the ellipse and in Cartesian coordinates (x, y, z) is a quadric with equation x2/a2 + y2/b2 + z2/c2 = 0.
(geography) Such a surface used as a model of the shape of the earth.

ellipticity

(uncountable) The condition of being elliptical (flattened from perfect circular or spherical form)
(mathematics) A measure of this flattening that is a function of the ellipse's equatorial and polar radii
Examples:

“This paper describes and tests several algorithms for calculating ellipticity, rectangularity, and triangularity shape descriptors.”

“From these can be calculated the ellipticity or deviation from a perfect sphere of the planet and its departure from an ellipsoidal shape.”

“It is not exactly the same face because of the tilt of the Moon's rotational axis to its orbital plane around Earth, and the slight ellipticity of that orbit.”

elliptical

(astronomy) An elliptical galaxy
An elliptical trainer

ellipse

(geometry) A closed curve, the locus of a point such that the sum of the distances from that point to two other fixed points (called the foci of the ellipse) is constant; equivalently, the conic section that is the intersection of a cone with a plane that does not intersect the base of the cone.
Synonyms:

oval, ovoid

Examples:

“To imagine their form, picture an ellipse levitating up from the floor, turning as it rises.”

ellipsograph

A mechanical instrument used to trace out an ellipse.
Synonyms:

device, machine, tool, trammel

Examples:

“The engineer used an ellipsograph to precisely sketch the elliptical shape for the new satellite's solar panels.”

elliptocyte

(biology) An elliptical cell, in particular such a RBC.
Synonyms:

ovalocyte

elliptograph

Alternative form of ellipsograph

ellipticalness

Quality of being elliptical.

ellipsographs

plural of ellipsograph
Synonyms:

devices, machines, tools, trammels

elliptographs

plural of elliptograph

elliptocytes

plural of elliptocyte
Synonyms:

ovalocytes

ellipticities

plural of ellipticity

ellipticals

plural of elliptical

ellipsoids

plural of ellipsoid

ellipses

plural of ellipsis
Synonyms:

Examples:

“For a detailed explanation of standard deviational ellipses see the excellent book by David Ebdon.”

“It's the other conic sections that confuse me, like ellipses and hyperbolas.”

“Direct quotations are poorly copy-edited and sometimes comprehend unmarked ellipses that alter their interpretation.”