English

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

 

arcane

 adjective
adjective
BrE BrE//ɑːˈkeɪn//
 
; NAmE NAmE//ɑːrˈkeɪn//
 
(formal)
 
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secret and mysterious and therefore difficult to understand the arcane rules of cricket Word Origin mid 16th cent.: from Latin arcanus, from arcere ‘to shut up’, from arca ‘chest’.
See the Oxford Advanced American Dictionary entry: arcane