ellipsoidal
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Definition
- Adjective:
- Having the nature or shape of an ellipsoid: Describes an object or form that is shaped like an ellipsoid, which is a three-dimensional geometric figure resembling a stretched or flattened sphere. All plane sections through an ellipsoid are ellipses or circles.
Usage Examples
- Adjective:
- The planet Jupiter is not perfectly spherical; it is slightly ellipsoidal due to its rapid rotation.
- The researchers used an ellipsoidal reflector to focus the light beam in the experiment.
- Many seeds, like those of a watermelon, have an ellipsoidal shape.
Advanced Usage
- Technical/Scientific Context: The term is frequently used in mathematics, physics, astronomy, and engineering to describe the shape of objects, lenses, mirrors, or fields.
- The geoid is an ellipsoidal model used to approximate the shape of the Earth.
- Comparative Form: While less common, the comparative "more ellipsoidal" can be used.
- The new design is more ellipsoidal than the previous spherical one.
Variants and Related Words
- Ellipsoid (noun): The three-dimensional geometric shape itself.
- An ellipsoid is defined by three perpendicular axes of different lengths.
- Ellipsoidally (adverb): In an ellipsoidal manner.
- The mass is distributed ellipsoidally within the galaxy.
Synonyms
- Oval (in three dimensions): While "oval" is often two-dimensional, it can loosely describe a similar rounded, elongated shape.
- Spheroidal: Specifically refers to an ellipsoid that is generated by rotating an ellipse about one of its axes, making it symmetric about that axis. (A sphere is a special case of an ellipsoid where all axes are equal.)
Antonyms
- Spherical: Perfectly round in three dimensions, like a ball.
- Cubic: Shaped like a cube.
- Angular: Having sharp angles or corners.
Related Phrases/Idioms
(There are no common idioms or phrasal verbs specifically for the adjective "ellipsoidal." It is a precise technical term.)
Adjective
- having the nature or shape of an ellipsoid