Definition of Radian in English :
Define Radian in English
Radian meaning in English
Meaning of Radian in English
Pronunciation of Radian in English
Radian pronunciation in English
Pronounce Radian in Englishsee synonyms of radian
1. rad, radian
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)
WordNet Lexical Database for English. Princeton University. 2010.
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Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.
The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.