shaped like an ellipsoid of revolution; approximately spherical
2.
of or relating to an ellipsoid of revolution
Derived forms
spheroidally (spheˈroidally) or spheroidically (spheˈroidically)
adverb
spheroidal in American English
(sfɪˈrɔidl)
adjective
1.
pertaining to a spheroid or spheroids
2.
shaped like a spheroid; approximately spherical
Also: spheroidic
Derived forms
spheroidallyspheroidically
adverb
Word origin
[1775–85; spheroid + -al1]This word is first recorded in the period 1775–85. Other words that entered Englishat around the same time include: Americanism, amateur, impact, interference, waltz
Examples of 'spheroidal' in a sentence
spheroidal
Grains are spheroidal and pantoporate, and the tectum tubuliferous and spinulose.
M. Struwig, S. J. Siebert, A. Jordaan 2013, 'Pollen morphology of members of southern African Boerhavia and Commicarpus(Nyctaginaceae)', Bothalia: African Biodiversity & Conservationhttps://abcjournal.org/index.php/abc/article/view/82. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Both spheroidal graphite iron and compacted graphite iron are used in the automotive industry.
De-lin Li 2017, 'Mixed graphite cast iron for automotive exhaust component applications', China Foundryhttp://ff.foundryworld.com/uploadfile/2018010333060861.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The pollen grains are spheroidal to oblate to sub-oblate in shape.
Olubukola ADEDEJI 2010, 'Palynology of the Genus Stachytarpheta Vahl. (Verbenaceae)', Notulae Scientia Biologicaehttp://notulaebiologicae.ro/index.php/nsb/article/view/4816. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Similar results are obtained for oblate spheroidal planets in the solar system.
Chifu E.N. 2011, 'Black Holes in the Framework of the Metric Tensor Exterior to the Sun and Planets',Progress in Physicshttp://www.ptep-online.com/index_files/2011/PP-25-12.PDF. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The tribological characteristics of spheroidal graphite cast irons with and without nanosized additives are investigated.
J. Kaleicheva, V. Mishev, Z. Karaguiozova, G. Nikolcheva, A. Miteva 2017, 'Effect of Nanoadditives on the Wear Behavior of Spheroidal Graphite Cast Irons', Tribology in Industryhttp://www.tribology.fink.rs/journals/2017/2017-3/3.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)