Wiktionary
c.
adv. circa. n. 1 city. 2 (context informal English) cancer.
Wikipedia
C.
C. or c. may refer to:
- Circa: in genealogy and historical writing, c. means circa, and is used when the dates of events are approximately known
- Chapter in legal citation, c. means chapter, and is used to refer to the specific chapter number which a statute has been assigned in a volume
- Caius or Gaius in Roman name abbreviations
- C. was a pen-name used by Samuel Taylor Coleridge