plural ra·di·i [rey-dee-ahy], /ˈreɪ diˌaɪ/, ra·di·us·es.
- a straight line extending from the center of a circle or sphere to the circumference or surface: The radius of a circle is half the diameter.
- the length of such a line.
- any radial or radiating part.
- a circular area having an extent determined by the length of the radius from a given or specified central point: every house within a radius of 50 miles.
- a field or range of operation or influence.
- extent of possible operation, travel, etc., as under a single supply of fuel: the flying radius of an airplane.
- Anatomy. the bone of the forearm on the thumb side.Compare ulna.
- Zoology. a corresponding bone in the forelimb of other vertebrates.
- Machinery Now Rare. the throw of an eccentric wheel or cam.
- a rounded corner or edge on a machined or cast piece of metal.
- Entomology. one of the principal longitudinal veins in the anterior portion of the wing of an insect.
- At this point, solvers like Thanh Nguyen used trigonometry to calculate the inner radius of the annulus, which turned out to be R√3.
- Not only did Grinin’s team find a value for the charge radius of the proton consistent with the value obtained in muonic hydrogen, they inferred a much more precise value for the Rydberg constant.
- Know your radiusEvery smart device implements its geofencing radius a little differently.
- Through our network of centrally located fulfillment centers we are able to service customers in a small delivery radius.
- There are a couple of ways to measure a proton's charge radius.
- By “the Internet,” they meant the people within a seven-cubicle radius of the person who wrote that blog post.
- Soon even the closest spectators, right at the edge of my empty radius, turned and looked at me.
- Another requirement was that the Colombian National Police would not be permitted within a 12-mile radius of his prison.
- In 2012, FIS announced a new requirement increasing the minimum turn radius of GS skis by eight meters.
- These were then spread over a 300-mile radius, covered in ravines, gorges and pine forests.
- And from my roost I could note the passing of anything bigger than a buffalo yearling, within a radius of at least six miles.
- Some of them, stronger than others, sent roots for a radius of a hundred miles, others for a few leagues and no more.
- General Steuben observing the large radius of camp concluded that Cornwallis' entire force was across the river.
- There are a good many neighbours within a radius of five miles; the trains to town are not all that could be wished.
- A very dense fog enveloped everything, confining the view of surrounding objects to a radius of about fifty yards.