English

Definition of supermax noun from the Oxford Advanced Learner's Dictionary

 

supermax

 noun
noun
BrE BrE//ˈsuːpəmæks//
 
, BrE//ˈsjuːpəmæks//
 
; NAmE NAmE//ˈsuːpərmæks//
 
(especially North American English)
 
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a maximum security prison, intended for very dangerous prisoners
See the Oxford Advanced American Dictionary entry: supermax