radian Definition
ra·dian (rā′dē ən)
noun
the basic unit of plane angle in the SI system, equal to 57°, 17′, 44.8″ (57.29578°, the angle formed at the center of a circle by two radii cutting off an arc whose length is equal to the radius of the circle): one degree equals 0.017454 radian and 360 degrees equals 2π radians: abbrev. rad
Etymology: < radius
radian Telecom Definition
radian Usage Examples
Converse of object
use: When you are doing calculus you always use radians.
Adjective modifier
- 2p: This means that in any circle, there are 2p radians.
- specified: Subsequent rendering is rotated by the specified radians relative to the previous origin.
- pi/2: It will be reflected undergoing a phase change of pi/2 radians?
- 2pi: This means that 360° is the same as 2pi radians or 180° is pi radians.
Modifies a noun
- angle: FSINCOS ANS r1 - r2 r3 r2 is the sine of the radian angle r1. r3 is the cosine of the radian angle r1.
- measure: Radian measure Most people usually learn to measure an angle in degrees.
- argument: SIN A function giving the sine of its radian argument.
- r1: FSINCOS ANS r1 - r2 r3 r2 is the sine of the radian angle r1. r3 is the cosine of the radian angle r1.
- unit: Keywords DEGREES By default, all angular inputs and keywords are assumed to be in radian units.
Noun used with modifier
- pi: Therefore, there is a full 360 degrees or 2 pi radians of phase shift for reflections from a load HALF a wavelength away.
- p: Two common methods are to use 360 degrees, or 2 p radians.
- milli: The beam expanders had reduced the divergence to just less than 0.4 milli radians.
- micro: For the most commonly used cut of silicon crystal, this angular range is approximately 3 micro radians.
Preposition: of
oscillation: A definition of Q is " Energy stored in the cavity divided by energy dissipated per radian of oscillation " .
Preposition: for
angle: The internal units of the variables are bohr for bond lengths and radians for angles.
Browse dictionary entries near radian
- ‹ radial saw
- ‹ radial (ply) tire
- ‹ radial keratotomy
- ‹ radial engine
- ‹ radial (arm) saw
- ‹ radial
- ‹ raddle
- ‹ radarscope
- ‹ radar beacon
- ‹ radar
- radiance ›
- radiant ›
- radiant energy ›
- radiant flux ›
- radiant heating ›
- radiate ›
- radiation ›
- radiation sickness ›
- radiator ›
- radical ›

