Thorus is likely a misspelling of torus, which has multiple meanings. Here's a breakdown:
Torus: Meanings
The word "torus" refers to different concepts depending on the context. The reference provides two primary meanings:
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Geometric Shape: A torus is a doughnut-shaped surface created by rotating a circle around an axis within its plane that doesn't intersect the circle itself. The broader term for this shape is "toroid".
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Anatomical Feature: In anatomy, a torus describes a smooth, rounded protrusion. The reference specifically mentions a bony ridge on the skull as an example of an anatomical torus.
| Category | Definition | Example |
|---|---|---|
| Geometry | Doughnut-shaped surface formed by rotating a circle around a non-intersecting axis in its plane. | A doughnut, an inner tube. |
| Anatomy | A smooth, rounded anatomical protuberance. | Bony ridge on the skull. |
Examples and Practical Insights
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Geometry: Imagine a hula hoop. The surface of the hula hoop is a torus. Another example is the shape of many inflatable inner tubes.
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Anatomy: A torus mandibularis is a bony growth in the lower jaw. This is an example of a torus found in the human body.
