 radius |
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| 1. | [ noun ] (geometry) the length of a line segment between the center and circumference of a circle or sphere | |
| Synonyms: | r | |
| Related terms: | length radius_of_curvature semidiameter diameter | |
| 2. | [ noun ] a circular region whose area is indicated by the length of its radius | |
| Examples: | "they located it within a radius of 2 miles" |
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| Related terms: | region | |
| 3. | [ noun ] (mathematics,geometry) a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere) | |
| Related terms: | straight_line | |
| 4. | [ noun ] (anatomy,zoology) the outer and slightly shorter of the two bones of the human forearm | |
| Related terms: | arm_bone forearm | |
| 5. | [ noun ] support consisting of a radial member of a wheel joining the hub to the rim | |
| Synonyms: | spoke | |
| Related terms: | support cartwheel wagon_wheel bicycle_wheel | |
| Similar spelling: |
Rattus radish radix rates Radich Radice |
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