radius
- noun
- /ˈreɪdiəs/
- Specialized
- The watch glass had a radius of curvature of 0.8 cm.
- radius R
- radius in cm
- radius in inches
Yes, I was wondering why is the radius not plus or minus?
- Yes, I was wondering why is the radius not plus or minus?
- OK, then when you walk π times that radius, you'll be halfway around.
- So how fast is the radius changing?
- For the things around us, the Schwarzschild radius is much, much smaller than the actual radius.
- Isn't the half line of a circle the radius?
- That is, you keep the mass fixed, but you shrink the radius.
Examples
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Change by a few inches, Yet the radius remains the same.
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What's going to be the radius of my circle here?
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Has a radius of about five miles.
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Well, all of these red lines are the radius of the circle and those are all the same.
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Ask what might be expected from a measurement of the radius of that object.
Academic text (2004) -
For a circular door of radius R and mass M, then we have:
Blog text (21) -
For the things around us, the Schwarzschild radius is much, much smaller than the actual radius.
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The radius of each successive circle increased cumulatively, so each radius was 1/4 in. larger than the previous radius increase.
Academic text (1999) -
Its mean equatorial radius is 22 kilometers (13 miles) longer than its polar one.
Academic text (1996) -
In geometry class, we learned that the radius of a circle is the distance from its center to any point on its edge.
Synonyms
A line from the center to the edge of a circle or to the surface of a sphere
A straight line from a point to a central point, for example the center of rotation or the origin
Half the visible width of an object in the sky as seen from Earth
Compounds
- Specialized
A straight line from a point to a central point, for example the center of rotation or the origin
- Specialized
The distance from a curve to the center of the circle that best fits the curve at a point
Surface Forms
Etymology
Radius comes from Latin radius, which meant a 'ray' or 'spoke' — a straight line from the centre. So radius is the straight line or distance from the center of a circle to its edge.