Copyright © Philip M. Parker, INSEAD. Terms of Use.

Spheroid

Definition: Spheroid

Spheroid

Noun

1. A shape that is generated by rotating an ellipse around one of its axes; "it looked like a sphere but on closer examination I saw it was really a spheroid".

Source: WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.
 

Date "spheroid" was first used in popular English literature: sometime before 1781. (references)

Etymology: Spheroid \Sphe"roid\, noun. [Latin spheroides ball-like, spherical, Greek sphere + form: compare to French sph['e]ro["i]de.]. (Websters 1913)


Specialty Definition: Spheroid

DomainDefinition

Aerospace

An ellipsoid; a figure resembling a sphere. Also called ellipsoid or ellipsoid of revolution from the fact that it can be formed by revolving an ellipse about one of its axes. If the shorter axis is used as the axis of revolution, an oblate spheroid results, and if the longer axis is used, a prolate spheroid results. The earth is approximately an oblate spheroid. (references)

Geography

A solid body formed by the revolution of an ellipse about its axis. Source: European Union. (references)

Geological

Mathematical figure closely approaching the geoid in form and size and used as a surface of reference for geodetic surveys. A reference spheroid or ellipsoid is a spheroid determined by revolving an ellipse about its shorter (polar) axis and used as a base for geodetic surveys of a large section of the Earth (such as the Clarke spheroid of 1866 which is used for geodetic surveys in the United States). (references)

Metallurgy

A small sphere. Source: European Union. (references)

Mining

In general, any figure differing but little from a sphere. In geodesy, a mathematical figure closely approaching the geoid in form and size, andused as a surface of reference for geodetic surveys. (references)

Physics

Resembling a sphere, but with 1 axis elongated. Source: European Union. (references)

Source: compiled by the editor from various references; see credits.

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Specialty Definition: Spheroid

(From Wikipedia, the free Encyclopedia)

A spheroid is a quadric surface in three dimensions obtained by rotating an ellipse about one of its principal axes. If the ellipse is rotated about its major axis, the surface is called a prolate spheroid (similar to the shape of a rugby ball). If the minor axis is chosen, the surface is called an oblate spheroid (similar to the shape of planet Earth).

The sphere is a special case of the spheroid in which the generating ellipse is a circle.

A spheroid is a special case of an ellipsoid where two of the three major axes are equal.

Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Spheroid."

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Synonym: Spheroid

Synonym: ellipsoid of revolution (n). (additional references)

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Synonyms within Context: Spheroid

ContextSynonyms within Context (source: adapted from Roget's Thesaurus).

Rotundity

Sphere, globe, ball, boulder, bowlder; spheroid, ellipsoid; oblong spheroid; oblate spheroid, prolate spheroid; drop, spherule, globule, vesicle, bulb, bullet, pellet, pelote, clew, pill, marble, pea, knob, pommel, horn; knot (convolution).

Source: adapted from Roget's Thesaurus.

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Crosswords: Spheroid

English words defined with "spheroid": Ellipsoid of revolutiongenus MelocactusHemispheroidMelocactusOblatum, Oblongum-oidprolate, ProlatumSemispheroidalwatermelon-shaped. (references)
Specialty definitions using "spheroid": deflection of the verticalexperiencia de referenciageodetic coordinates, geodetic datum, geodetic latitude, geodetic longitude, geoidMethanosarcinaceaeoblate spheroidprolate spheroidspherical coordinates, spheroidal excess, Surface of the Earth. (references)
Etymologies containing "spheroid": Hemispheroid. (references)

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Commercial Usage: Spheroid

DomainTitle

Books

  • Sphere, Spheroid, and Projections for Surveyors (reference)

  • Spheroid Culture in Cancer Research (reference)

  • The equidistant concentration, the perfect sphere, to the spheroid, in terms of motion (reference)

    (more book examples)

Source: compiled by the editor from various references; see credits.

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Photo Album: Spheroid

ThumbnailDescription & Credit

Title page of "La Figure de la Terre," by Pierre Bouguer, 1749. Bouguer was a famous surveyor and geophysicist who surveyed an arc of the meridian near the equator in South America and helped establish that the Earth is an oblate spheroid, in agreement with Sir Isaac Newton's views. Library Call Number QB291 .B58 1749. Credit: Treasures of the Library.

Source: pictures compiled by the editor from various references; see picture credits.

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Usage Frequency: Spheroid

"Spheroid" is generally used as a noun (singular) -- approximately 100.00% of the time. "Spheroid" is used about 8 times out of a sample of 100 million words spoken or written in English. Its rank is based on over 700,000 words used in the English language. Some parts-of-speech are not covered due to the samples used by the British National Corpus. (note: percents less than one-hundredth of one percent have been omitted)
Parts of SpeechPercentUsage per
100 Million Words
Rank in English
Noun (singular)100%8124,375

Source: compiled by the editor from several corpora; see credits.

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Expressions: Spheroid

Expressions using "spheroid": oblate spheroid prolate spheroid spheroid joint. Additional references.

Source: compiled by the editor from various references; see credits.

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Frequency of Internet Keywords: Spheroid

The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com.
 
ExpressionFrequency
per Day

spheroid

18

oblate spheroid

4
Source: compiled by the editor from various references; see credits.

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Modern Translation: Spheroid

Language Translations for "spheroid"; alternative meanings/domain in parentheses.

Albanian

  

sferoid (sphericity). (various references)

   

Arabic 

  

‏الكرواني جسم شبيه بالكرة, ‏العظم الإسفيني. (various references)

   

Bulgarian 

  

сфероид, леко сплеснато кълбо. (various references)

   

Chinese 

  

球". (various references)

   

Czech

  

sféroid. (various references)

   

Danish

  

sphaeroid (spheroidal), sfaeroid, lille kugle, kugleformet (globose, globular, nodular, spherical, spheroidal), ellipsoide (ellipsoid). (various references)

   

Dutch

  

sferoïed (spheroidal), sferoïd (spheroidal, spherule), bolvormig (bulbiform, bulb-shaped, globose, globular, spheroidal), bolletje (roll). (various references)

   

Finnish

  

sferoidi (spherule), pieni pallo. (various references)

   

French

  

sphéroïde (spheroidal, spherule). (various references)

   

German

  

Sphäroid (spheroidal). (various references)

   

Greek 

  

σφαιροειδήσ (globular, orbicular, orbiculate, spheroidal), σφαιρίδιο (globule, pellet), ελλειψοειδές εκ περιστροφής. (various references)

   

Hungarian

  

szteroid (steroid). (various references)

   

Italian

  

sferoide (spheroidal, spherule). (various references)

   

Japanese Kanji 

  

回転楕円" . (various references)

   

Japanese Katakana 

  

かいて" え"たい. (various references)

   

Manx

  

co-chruinnoid. (various references)

   

Pig Latin

  

eroidsphay

   

Portuguese

  

esferóide (spheroidal). (various references)

   

Romanian

  

sferoidal (spheroidal), sferoid. (various references)

   

Russian 

  

сфероид. (various references)

   

Serbo-Croatian

  

sferoid, obrtni elipsoid. (various references)

   

Spanish

  

esferoide. (various references)

   

Swedish

  

sfärulit, sfärolit. (various references)

   

Thai

  

รูปกลมรี. (various references)

   

Turkish

  

küreye benzer (spheroidal, spheroidic, spheroidical), küremsi cisim, küremsi (spheroidal, spheroidic, spheroidical). (various references)

   

Ukrainian

  

сфероїд. (various references)

   

Vietnamese 

  

hình tựa cầu, hình phỏng cầu. (various references)

Source: compiled by the editor from various translation references.

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Derivations & Misspellings: Spheroid

Derivations

Words beginning with "spheroid": spheroidal, spheroidally, spheroids. (additional references)


Misspellings

"Spheroid" is suggested in spellcheckers for the following: epheboi, ophiuroid, phugoid, sphereoid, spheriod, sphero. (additional references)

Source: compiled by the editor, based on several corpora (additional references).

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Rhyming with "Spheroid"

# of Phoneme MatchesPronunciationWord(s) rhyming with "spheroid" (pronounced sfi"roy'd)
3-r oy' dandroid, corticosteroid.

Source: compiled by the editor (additional references); see credits.

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Anagrams: Spheroid

Scrabble® Enable2K-Verified Anagrams

Words within the letters "d-e-h-i-o-p-r-s"

-1 letter: periods.

-2 letters: dopers, dopier, dories, ephods, ephori, ephors, hiders, hoised, hopers, hordes, horsed, hosier, pedros, period, perish, pished, poised, poiser, posher, prides, prised, prosed, redips, reship, reshod, shored, spider, spired, spored.

-3 letters: dipso, doers, doper, dopes, dorps, doser, dries, drips, drops, eidos, ephod, ephor, heirs, herds, heros, hider, hides, hired, hires, hoers, hoise.

 Words containing the letters "d-e-h-i-o-p-r-s"
 

+1 letter: aphorised, spheroids, worshiped.

 

+2 letters: diaphorase, editorship, endorphins, eriophyids, hydropsies, hypodermis, ideographs, priesthood, prophesied, repolished, rhapsodies, rhapsodize, spheroidal, worshipped.

 

+3 letters: chiropodies, comradeship, diaphorases, diaphoreses, diaphoresis, dichroscope, drosophilae, dystrophies, editorships, hippodromes, hyperploids, hypodermics, orthopedics, orthopedist, prehominids, premonished, priesthoods, pyrethroids, radiophones, rhapsodized, rhapsodizes, soldiership.

 

+4 letters: comradeships, demographics, demographies, diaphoretics, dichroscopes, diphtheroids, directorship, discographer, endomorphies, endomorphism, haloperidols, heteroploids, horsewhipped, hydropathies, hydrospheric, hyperboloids, hypodermises, ideographies, impoverished, orthopaedics, orthopedists, overlordship, photoperiods, polyhedrosis, soldierships, spheroidally, spinsterhood.

Source: compiled by the editor from various references; see credits.

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INDEX

1. Definition
2. Synonyms
3. Crosswords
4. Usage: Commercial
5. Images: Photo Album
6. Usage Frequency
7. Expressions
8. Expressions: Internet
9. Translations: Modern
10. Derivations
11. Rhymes
12. Anagrams
13. Bibliography


  

Copyright © Philip M. Parker, INSEAD. Terms of Use.