prolate
/prolate/
Definition
- Adjective:
- Having a shape elongated in the direction of the polar axis: Describes a three-dimensional figure, especially a spheroid or ellipsoid, that is lengthened along one axis, making it longer than it is wide. It is the opposite of "oblate."
- Rounded like an egg: Having an oval or egg-like shape that is pointed at the ends.
Examples of Usage
- Adjective:
- A rugby ball is a common example of a prolate spheroid.
- The planet Jupiter is not a perfect sphere; it is slightly prolate due to its rapid rotation.
- The scientist described the cell's nucleus as having a prolate form.
Advanced Usage
- Technical/Scientific Context: The term is primarily used in geometry, astronomy, physics, and biology to describe the shape of objects.
- In geometry, a prolate cycloid is a curve traced by a point on the circumference of a circle rolling along a line.
- Comparative Form: "More prolate" can be used, though the term is often used in absolute technical descriptions.
- Ellipse A is more prolate than ellipse B.
Variants and Related Words
- Prolateness (n): The quality or state of being prolate.
- The prolateness of the spheroid was measured precisely.
- Prolate Spheroid (n): A specific shape generated by rotating an ellipse around its major (longer) axis.
- Many galaxies can be modeled as prolate spheroids.
Synonyms
- Elongated: Extended in length.
- Ovoid: Egg-shaped.
- Ellipsoidal: Shaped like an ellipsoid (can be prolate or oblate).
Antonyms
- Oblate: Flattened at the poles; having an equatorial diameter greater than the polar diameter.
- The Earth is an oblate spheroid, slightly flattened at the poles.
Adjective
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rounded like an egg
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having the polar diameter greater than the equatorial diameter
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a prolate spheroid is generated by revolving an ellipse about its major axis
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