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spheroid Syllabification: sphe·roid
Pronunciation: /ˈsfirˌoid/

Definition of spheroid in English:


1A spherelike but not perfectly spherical body.
Example sentences
  • A remarkable feature of oligoamine-condensed DNA is the ability to assume condition-defined morphologies such as spheroids, toroids, and rods.
  • Elliptical galaxies are three-dimensional objects that range from spheres to elongated spheroids like footballs.
  • A chemical engineer phoned to tell me that he had spotted a spheroid or fat football with rounded ends flying over on the evening of August 28, 2002.
1.1A solid generated by a half-revolution of an ellipse about its major axis ( prolate spheroid) or minor axis ( oblate spheroid).
Example sentences
  • To a good approximation, the geoid is an oblate spheroid whose major axis is about 0.3 per cent longer than the minor one.
  • However, we are aware of no studies that have considered the motion of an ellipsoid or oblate spheroid near a plane wall under linear shear flow.
  • The change in colour from cream-coloured to amber, and the change in shape from a prolate spheroid to an indented, prismatic solid, is typical for corn pollen during drying.



Pronunciation: /sfiˈroidl/
Example sentences
  • Similar results are obtained for more general spheroidal shapes such as ellipsoid.
  • The adult ovary may present marked deviations from its typical form, sometimes being unusually long, spheroidal, flattened, triangular, crescentric, or otherwise irregular.
  • All sound elements were cleaned and finished with modern paints; broken elements were replaced in cast spheroidal graphite iron to exactly the same sections as the originals.


Pronunciation: /ˌsfiroiˈdisədē/
Example sentences
  • This makes it possible to easily adjust the grain size and to produce ground materials having a spheroidicity which is best suited for use as a bulking agent for paper.
  • For vertebrate lenses, measures of anterior and posterior spheroidicity are required because these lenses are asymmetrical, oblate spheroids.

Words that rhyme with spheroid

meteoroid • Murgatroyd

Definition of spheroid in:

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Word of the day fortissimo
Pronunciation: fôrˈtisəˌmō
(especially as a direction) very loud or loudly