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radian ['reɪdiən] n
el. radiante m
 English thesaurus
radian ['reɪdiən] abbr.
abbr., opt. rad
abbr., scottish rad (angular measurement)
tech., abbr. radn
Radians n
unit.meas., abbr. R
radian: 6 phrases in 5 subjects
Earth sciences1
Electronics1
Mathematics1
Measuring instruments2
Scientific1