Meaning of circa

cir•ca

Pronunciation: (sûr'ku), [key]
— prep., adv.
  1. about: (used esp. in) approximate dates:Abbr.: ca, ca., c., c, cir., circ. The Venerable Bede was born circa 673.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.