Definition of radian
: a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc whose length equals the radius or approximately 57.3 degrees
Recent Examples of radian from the Web
Radian was required to set aside reserves against potential losses on bad loans, and Mr. Lutz reckoned that his employer was materially understating those amounts.
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First Known Use of radian
Medical Definition of radian
: a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc equal in length to the radius
Seen and Heard
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