Spheroid Meaning: Definition, Examples, and Translations
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spheroid
[ˈsfɪərɔɪd ]
Definition
shape
A spheroid is a three-dimensional shape that is similar to a sphere but is not perfectly round. It is characterized by having an equatorial diameter greater than the distance between its poles.
Synonyms
ellipsoid, oblate sphere, oval.
Which Synonym Should You Choose?
| Word | Description / Examples |
|---|---|
| spheroid |
Used to describe a shape that is almost spherical but not perfectly so. Common in scientific or technical contexts.
|
| ellipsoid |
Applied in mathematical, geometric, or scientific contexts to describe a three-dimensional figure where all plane sections are ellipses or circles.
|
| oval |
Commonly used to describe a rounded, elongated shape that is flat or two-dimensional. Suitable for everyday language and non-technical descriptions.
|
| oblate sphere |
Used specifically to describe a sphere that is flattened at the poles and bulging at the equator. Often employed in astronomy and geophysics.
|
Examples of usage
- The Earth is not a perfect sphere, it is actually a spheroid due to its bulging at the equator.
- The rugby ball is a spheroid shape, unlike a soccer ball which is a perfect sphere.
Translations
To see the translation, please select a language from the options available.
Interesting Facts
Science
- In astronomy, planets are often classified as spheroids due to their shape caused by gravity pulling matter into a rounded form.
- Some objects in space, like asteroids, can be irregularly shaped, resulting in non-standard spheroids.
- The Earth is often described as an oblate spheroid because it is slightly flattened at the poles and bulging at the equator.
Mathematics
- A spheroid can be mathematically modeled using the equation of a sphere, but includes an additional parameter for the degree of flattening.
- The volume and surface area formulas for spheroids are key concepts in geometry and calculus.
- In engineering, understanding spheroidal shapes helps in designing objects like tanks and pipes for optimal strength and stability.
Art and Design
- Spheroids are often used in sculpture and design, where the smooth, rounded forms can create visually appealing objects.
- The famous artist Henry Moore frequently utilized spheroidal shapes in his large-scale sculptures, symbolizing human forms and nature.
Everyday Life
- Sports balls like soccer balls and basketballs are practical examples of spheroids used in various games.
- In cooking, things like oranges and lemons are close to being perfect spheroids and enhance visual appeal in presentations.
Origin of 'spheroid'
Main points about word origin
- The term comes from the Greek word 'sphaira' meaning sphere and the suffix '-oid' meaning 'like' or 'resembling'.
- The word has been in use since the 16th century, referring to both physical shapes and abstract forms.
The word 'spheroid' originated from the combination of the Greek words 'sphaira' (sphere) and 'eidos' (form). It was first used in the mid 18th century to describe shapes that were similar to spheres but not perfectly round.