Word.ws English Dictionary

Plural of penitentiary

regular plural

The plural of penitentiary is penitentiaries.

Forms of penitentiary

Singularpenitentiary /ˌpɛnɪˈtɛnʃəɹi/
Pluralpenitentiaries
Countablecountable

Penitentiaries in a sentence

  • Those include 9 detention centers that hold defendants awaiting trial, 21 high-security penitentiaries and a supersecure prison in Florence, Colo., where several convicted terrorists are already locked up.2009 January 24, Mark Mazzetti, “Where Will Guantánamo Detainees Go?”, in New York Times. From the entry supersecure

Meaning of penitentiary

  1. noun A state or federal prison for convicted felons; (loosely) a prison.
  2. noun A priest in the Roman Catholic Church who administers the sacrament of penance.
  3. noun One who prescribes the rules and measures of penance.

Full definition of penitentiary

Questions about the plural of penitentiary

What is the plural of penitentiary?
The plural of penitentiary is penitentiaries.
Is penitentiary countable?
Penitentiary is a countable noun.

Source and license

Adapted from Wiktionary: penitentiary (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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