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maximum-security

American  
[mak-suh-muhm-si-kyoor-i-tee] / ˈmæk sə məm sɪˈkyʊər ɪ ti /

adjective

  1. designed for or housing prisoners regarded as being very dangerous to society.


Etymology

Origin of maximum-security

First recorded in 1965–70

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.

At the Stateville Correctional Center—a maximum-security prison in Illinois, which Gov. JB Pritzker ordered closed last year for unrelated reasons—a group of professors offered courses for inmates, funded by the Andrew W. Mellon Foundation.

From The Wall Street Journal • Mar. 4, 2026

He had been placed in Atascadero State Hospital, a maximum-security prison for mentally ill convicts located between Los Angeles and San Francisco.

From Los Angeles Times • Mar. 2, 2026

Bureau of Prisons records show he is housed at a maximum-security federal prison in Florence, Colo., know as the “Alcatraz of The Rockies,” that also houses the “El Chapo” and other high-profile criminals.

From Los Angeles Times • Feb. 22, 2026

On Monday, Weiss was accused by a CBS News staff member of pulling a planned segment on an El Salvador maximum-security prison where the Trump administration sent hundreds of Venezuelan migrants.

From Barron's • Dec. 22, 2025

The maximum-security prison was more recently built than Holman or Donaldson, the other maximum-security prisons in Alabama, but no one would suggest that St. Clair was modern.

From "Just Mercy" by Bryan Stevenson