What does ca mean in shorthand?

Question

EXAMPLE: Born ca 1800

Answer 1

ca means circa - about - approximately

Answer 2

ca, in lower case letters, means circa--which is Latin for "about or around". So ca 1800 could mean anywhere from 1795 to 1805 in a ten-year span.

   If the C is capitalized , it would be for California (using today's 2-letter state abbreviations). Since this wasn't used in 1800, however, I'd say it meant "circa."

Answer 3

In the context you give, in means circa.  That means that whoever wrote it is unsure whether that is the exact year, but has reason to believe it was that year or close to it.

Answer 4

circa or california

I hope that helps, it's the best I can do with no context...

Answer 5

"ca" as you used it is an abreviation for "circa", Latin for "about".