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R. is an abbreviation of the Latin word Rex (King) or Regina (Queen).[1]


In jurisprudence, it is used as notation in British or other Commonwealth realm criminal prosecutions to mean "the Crown" or "the state", which is represented by the current monarch.[2] It is often seen written as "R. v Defendant" which would be read as "The Crown and the Defendant".


In historiography, r. can be used to designate the ruling period of a person in dynastic power, to distinguish from his or her lifespan.

For example, one may write "Charles V (r. 1519–1556)" instead of "Charles V (1500–1558)" if the writer considers the year of enthronement to be more important information for the reader than the year of birth, or occasionally to emphasise when a ruler abdicated before dying. In addition to rex or regina, r. can also be an abbreviation of regnavit ("[he/she] ruled").[3]

See also[edit]


  1. ^ Dale, Rodney; Puttick, Steve (1997-01-01). The Wordsworth Dictionary of Abbreviations and Acronyms. Wordsworth Editions. p. 135. ISBN 9781853263859.
  2. ^ Gray, Debra (2004-01-01). Public Services (uniformed). Heinemann. p. 35. ISBN 9780435456597.
  3. ^ Robbins, John Fonseca (2015-08-31). Fonseca Robbins´Lexicon. Clube de Autores. p. 238.