Circa (from Latin 'around, about, roughly, approximately') – frequently abbreviated ca. or c. and less frequently circ., cca. or cc. – signifies "approximately" in several European languages and is used as a loanword in English, usually in reference to a date. Circa is widely used in historical writing when the dates of events are not accurately known.
This page duplicates a dictionary definition already listed on Wiktionary. Its dictionary counterpart can be found at Wiktionary:Transwiki:Circa, Wiktionary:Circa, or Wiktionary:circa.
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When used in date ranges, circa is applied before each approximate date, while dates without circa immediately preceding them are generally assumed to be known with certainty.
- 1732–1799: Both years are known precisely.
- c. 1732 – 1799: The beginning year is approximate; the end year is known precisely.
- 1732 – c. 1799: The beginning year is known precisely; the end year is approximate.
- c. 1732 – c. 1799: Both years are approximate.