supermax

British

/ ˈsuːpəˌmæks /

noun

having or relating to the very highest levels of security

a supermax jail

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Plum signed a one-year deal for $999,999, below the $1.4-million supermax she would have been eligible for as a core designated player.

From Los Angeles Times • Apr. 13, 2026

Political news outlet Axios, citing administration officials, reported that any "supermax" prison complex at the site would have to be built from scratch -- putting the total cost at somewhere around $2 billion.

From Barron's • Apr. 3, 2026

That’s more than the supermax salary across the entire league last season, $249,244.

From The Wall Street Journal • Mar. 20, 2026

Criticism of the deportation of the Venezuelans to the supermax prison has been growing not just in the US and in their homeland but also in El Salvador.

From BBC • Mar. 27, 2025

A supermax is like a huge SHU, with 100 percent segregation cells.

From "Newjack: Guarding Sing Sing" by Ted Conover

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023