adv., prep. [ L. ] Approximately; about; commonly abbreviated ca.; -- used especially before dates and numerical measures; as, he was born circa 1650; ca. 50 feet high. Syn. -- ca. [ PJC ]
[顷 / 頃, qǐngㄑㄧㄥˇ] unit of area equal to 100 mu 畝|亩 or 6.6667 hectacres; a short while; a little while ago; circa. (for approximate dates), See Also: 畝, 亩#23297