prolate

/prolate/
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prolate

A prolate spheroid rests on a wooden table next to a regular sphere.

Definition
  1. 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.
prolate

A prolate spheroid rests on a wooden table next to a regular sphere.

Adjective
  1. rounded like an egg
  2. having the polar diameter greater than the equatorial diameter
    • a prolate spheroid is generated by revolving an ellipse about its major axis

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