VS.

# Elliptical vs. Ellipsoid

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In a shape of, or reminding of, an ellipse; oval.

Ellipsoidnoun

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.

Of, or showing ellipsis; having a word or words omitted.

‘If he is sometimes elliptical and obscure, it is because he has so much to tell us. -- Edmund Wilson’;

Ellipsoidnoun

(geography) Such a surface used as a model of the shape of the earth.

‘Here the geoid is thirty meters below the ellipsoid.’;

(of speech) Concise, condensed.

Shaped like an ellipse; elliptical.

Elliptic.

(mathematics) Of or pertaining to an ellipse; elliptic.

Ellipticalnoun

(astronomy) An elliptical galaxy

(botany) Having the tridimensional shape of an ellipse rotated on its long axis.

Ellipticalnoun

An elliptical trainer

Ellipsoidnoun

A solid, all plane sections of which are ellipses or circles. See Conoid, n., 2 (a).

containing or characterized by ellipsis;

‘the clause of comparison is often elliptical’;

Pertaining to, or shaped like, an ellipsoid; as, ellipsoid or ellipsoidal form.

rounded like an egg

Ellipsoidnoun

a surface whose plane sections are all ellipses or circles;

‘the Earth is an ellipsoid’;

characterized by extreme economy of expression or omission of superfluous elements;

‘the dialogue is elliptic and full of dark hints’; ‘the explanation was concise, even elliptical to the verge of obscurity’;