Preventive Detention Definition

noun
The detention in jail, prior and during criminal trial, of a defendant deemed too dangerous for release.
American Heritage
Imprisonment without trial of a person identified by authorities as a danger to society.
American Heritage
A confinement of an accused person pending trial, under terms of a statute authorizing denial of bail to defendants charged with having committed certain offenses and/or are considered to be a danger to themselves or to the public at large.
Webster's New World Law