Look up: circa

1. circa
   circa Used before a date to indicate that it is approximate or that it is an estimated date; abbreviated as: ca, ca., c., c, cir., circ.
   Found on http://www.wordinfo.info/words/index/inf
   
   
2. circa
   circa; c., ca. About, around. Used in giving approximate dates, e.g. 'It happened ca. A.D. 1500.'
   Found on http://www.wordinfo.info/words/index/inf
   
   
3. Circa
   `Circa` (), usually abbreviated `c.` or `ca.` (and occasionally `circ.` or `cca.`), means "approximately" in the English language, usually referring to a date. Circa is widely used in genealogy and historical writing when the dates of events are not precisely known. When used in date range...
   Found on http://en.wikipedia.org/wiki/Circa
   
   
4. Circa
   (company) `Circa` (stylized C1RCA or C1rca, pronounced "circa") is a skateboard footwear and apparel company that started in 1999 and is based in San Clemente, California, U.S. It was started by Four Star Distribution along with Chad Muska as its first professional rid...
   Found on http://en.wikipedia.org/wiki/Circa
   
   
5. Circa
   (band) `Circa` (stylized as CIRCA:) is a progressive rock supergroup founded by four musicians associated with Yes: current Yes member Alan White (drums), former Yes members Tony Kaye (Hammond, keyboards) and Billy Sherwood (bass, vocals), and guitarist Jimmy Haun, who played on the Ye...
   Found on http://en.wikipedia.org/wiki/Circa