Definition of refulgent adjective from the Oxford Advanced Learner's Dictionary

 

refulgent

 adjective
adjective
BrE BrE//rɪˈfʌldʒənt//
 
; NAmE NAmE//rɪˈfʌldʒənt//
 
(formal)
 
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very bright Word Origin late 15th cent.: from Latin refulgent- ‘shining out’, from the verb refulgere, from re- (expressing intensive force) + fulgere ‘to shine’.
See the Oxford Advanced American Dictionary entry: refulgent