a prince who acts as regent during the minority, disability, or absence of the legal sovereign
WordReference Random House Unabridged Dictionary of American English © 2025
prince′ re′gent,
- a prince who is regent of a country.
- 1780–90
Collins Concise English Dictionary © HarperCollins Publishers::
Collins Concise English Dictionary © HarperCollins Publishers::
George IV as regent of Great Britain and Ireland during the period of his father's mental incapacity (1811–20)
'prince regent' also found in these entries (note: many are not synonyms or translations):