L. prep. and adv. Around, round about, about. The prep. is often used in Eng. with dates, as circa 1400 (c. 1400); it sometimes occurs in comb., as circa-continental adj., etc.
1861. National Rev., Oct., 307. A curious photograph of a rustic family at work, circa 1390.
1874. in Geol. Mag., XI. 33. Confined to these circa-continental bands.
