different between oblong vs ellipsoid

English

Etymology

Borrowed from Latin oblongus.

Pronunciation

Adjective

oblong (comparative more oblong, superlative most oblong)

1. Longer than wide or wider than long; not square.
2. Roughly rectangular or ellipsoidal

Derived terms

• suboblong

Translations

Noun

oblong (plural oblongs)

1. Something with an oblong shape.
2. A rectangle having length greater than width or width greater than length.

Translations

Verb

oblong (third-person singular simple present oblongs, present participle oblonging, simple past and past participle oblonged)

1. This term needs a definition. Please help out and add a definition, then remove the text {{rfdef}}.

Related terms

• oblate
• obloid

See also

• prolate
• rectangle

Catalan

Etymology

Borrowed from Latin oblongus.

Pronunciation

• (Balearic, Valencian) IPA^(key): /o?bl??k/
• (Central) IPA^(key): /u?bl??/

Adjective

oblong (feminine oblonga, masculine plural oblongs, feminine plural oblongues)

1. oblong

French

Etymology

Borrowed from Latin oblongus.

Pronunciation

• IPA^(key): /?.bl??/

Adjective

oblong (feminine singular oblongue, masculine plural oblongs, feminine plural oblongues)

1. oblong

Further reading

• “oblong” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Romanian

Etymology

From French oblong, from Latin oblongus.

Adjective

oblong m or n (feminine singular oblong?, masculine plural oblongi, feminine and neuter plural oblonge)

1. oblong

Declension

English

Etymology

ellipse +? -oid

Noun

ellipsoid (plural ellipsoids)

1. (mathematics, geometry) 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.
   • 2002, John Michael Hollas, Basic Atomic and Molecular Spectroscopy, page 133,

     Polarizability can be imagined as a three-dimensional ellipsoid centred on the centre of the molecule, as shown in Figure 10.4.

   • 2004, Alfred Leick, GPS Satellite Surveying, 3rd Edition, page 367,

     Because only ellipsoids of rotation have been adopted in practical geodesy and surveying and triaxial ellipsoids have been limited to theoretical studies, we will use the term ellipsoid for brevity to mean ellipsoid of rotation.

   • 2010, Jan Van Sickle, Basic GIS Coordinates, 2nd Edition, page 73,

     As mentioned before, modern geodetic datums rely on the surfaces of geocentric ellipsoids to approximate the surface of the earth.

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

Usage notes

The general case, with semiaxes a, b and c all different, is a triaxial ellipsoid (more rarely, scalene ellipsoid). If two are the same, say b = c, the result is an ellipsoid of revolution, which may be oblate (if a < b) or prolate (a > b). The degenerate case a = b = c is a sphere. An ellipsoid of revolution is also called a spheroid.

Hypernyms

• quadric surface, quadric

Derived terms

• ellipsoid of revolution
• ellipsoid geodesic
• ellipsoid method
• ellipsoid packing
• scalene ellipsoid (rare)
• triaxial ellipsoid

Related terms

• ellipsoidal
• subellipsoid

Translations

See also

• geoid

Adjective

ellipsoid (comparative more ellipsoid, superlative most ellipsoid)

1. Shaped like an ellipse; elliptical.
2. (mathematics) Of or pertaining to an ellipse; elliptic.
3. (botany) Having the tridimensional shape of an ellipse rotated on its long axis.

Related terms

• ellipsoidal
• globoid
• ovoid

Translations

See also

• globose
• oblong

Swedish

Noun

ellipsoid c

1. (mathematics) ellipsoid

Declension