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Definition of Radius

Radius

  1. A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere.
  2. The preaxial bone of the forearm, or brachium, corresponding to the tibia of the hind limb. See Illust. of Artiodactyla.
  3. A ray, or outer floret, of the capitulum of such plants as the sunflower and the daisy. See Ray, 2.
  4. The barbs of a perfect feather.
  5. Radiating organs, or color-markings, of the radiates.
  6. The movable limb of a sextant or other angular instrument.

Radius Quotations

Both me and my wife's extended family all live within a 50-mile radius. Like me, a lot of them did time in London then started drifting back to the countryside and the sea. Perhaps it's a homing instinct.
Robert Smith

The radius vector describes equal areas in equal times.
Johannes Kepler

We're on the same radius from the Earth, and then we start to swing around to where we're ahead of them on the velocity vector, so we come in relative to the station from this forward velocity position and dock on to the forward end of the Lab.
Linda M. Godwin

I spend my weekends sleeping and watching DVDs, and eating at restaurants within a 2-block radius of my apartment.
Wentworth Miller

Ever since the Second World War, television signals (as well as FM radio and radar) have served as Homo sapiens' emissaries into deep space. High-frequency, high-power broadcasts have filled an Earth-centered bubble more than 60 light-years in radius with signals.
Seth Shostak
More "Radius" Quotations

Radius Translations

radius in Dutch is actieradius, spaakbeen, radius
radius in German is Radius
radius in Italian is raggio
radius in Portuguese is raio
radius in Swedish is radie

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