Look up: Radian

1. 
   Radian
   Unit of angular measurement equal to the angle at the center of a circle subtended by an arc equal in length to the radius. Equals about 57.296 degrees.
   Found on http://www2.jpl.nasa.gov/basics/bsfgloss
   
   
2. 
   Radian
   The radian is the SI unit (symbol rad) of plane angles, an alternative unit to the degree. It is the angle at the centre of a circle when the centre is joined to the two ends of an arc equal in length to the radius of the circle. There are 2 pi (approximately 6.284) radians in a full circle (360 degrees). One radian is approximately 57 degrees, and 1 degree is pi/180 or approximately 0.0175 radians. Radians are commonly used to specify angles in polar co-ordinates.
   Found on http://www.encyclo.co.uk/nol.php
   
   
3. 
   radian
   [n] - the unit of plane angle adopted under the System International d`Unites
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. 
   Radian
   SI Supplementary UnitThe radian is the plane angle between two radii of a circle which cut off on the circumference an arc equal in length to the radius.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
5. 
   radian
   (rad) Compare with steradian. An angle with vertex at the center of a circle of radius r that encompasses an arc of length r.
   Found on http://antoine.frostburg.edu/chem/senese
   
   
6. 
   radian
   an SI unit of plane angle,equal to the angle which,at the centre of a circle,subtends an arc of the circle equal to its radius Category: Electrical engineering and energy
   Found on http://www.mijnwoordenboek.nl/definition
   
   
7. 
   Radian
   Definition (advanced level) A unit of angle, chosen so that the number of radians in a full circle is exactly twice π . This simplifies the formulas for things like the area of a sector in a circle.<br /> One radian is approximately 57.29578 degrees. The symbol for radians is rad.
   Found on http://thesaurus.maths.org/mmkb/entry.ht
   
   
8. 
   Radian
   Ra'di·an (- a n) noun [ From Radius .] (Math.) An arc of a circle which is equal to the radius, or the angle measured by such an arc.
   Found on http://www.encyclo.co.uk/webster/R/3
   
   
9. 
   radian
   <mathematics> An arc of a circle which is equal to the radius, or the angle measured by such an arc. ... Origin: From Radius. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
10. 
    radian
    noun the unit of plane angle adopted under the Systeme International d`Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
11. 
    Radian
    The `radian`, in mathematics, is a unit of plane angle, equal to 180/Ć?ā‚¬ degrees, or about 57.2958 degrees. It is represented by the symbol `rad` or, more rarely, by the superscript c (for `circular measure`). For example, an angle of 1.2 radians would be written as `1.2 rad` or `1.2c` (the second symbol can be mistaken for a degree: `1.2š`). However, the radian is the standard unit of angular measurement for mathematicians, and in mathematical ...
    Found on http://en.wikipedia.org/wiki/Radian
    
    
12. 
    Radian
    • (n.) An arc of a circle which is equal to the radius, or the angle measured by such an arc.
    Found on http://thinkexist.com/dictionary/meaning
    
    
13. 
    radian
    (from the article `steradian`) ...complete surface area of a sphere is 4 times the square of its radius, the total solid angle about a point is equal to 4 steradians. Derived from ... Numerical values can be assigned to angles by selecting a unit of measure. The most common units are the degree and the radian. There are 360° in a .....
    Found on http://www.britannica.com/eb/a-z/r/3
    
    
14. 
    radian
    A supplementary SI unit of plane angle. [L. radius, ray]
    Found on
    
    
15. 
    Radian
    A measure of angle. 360 degrees = 2p radians. The radian measure of an angle is given geometrically by the ratio arc length/radius of the arc of a circle with the angle defined at its center and subtending the arc.
    Found on http://www-bdnew.fnal.gov/operations/acc
    
    
16. 
    Radian
    A measure of angle. 360 degrees = 2p radians. The radian measure of an angle is given geometrically by the ratio arc length/radius of the arc of a circle with the angle defined at its center and subtending the arc.
    Found on http://www-bdnew.fnal.gov/operations/acc
    
    
17. 
    radian
    One of two supplementary (dimensionless) units in the SI system of units (the other being the steradian). The radian is a unit of plane angle. There are 2p radians in a complete circle. One radian = 180/p degrees, or approximately 57.296°.
    Found on http://www.daviddarling.info/encyclopedi