Ca n 1: a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals [syn: {calcium}, {Ca}, {atomic number 20}] 2: a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes [syn: {California}, {Golden State}, {CA}, {Calif.}]
Ca \Ca\ n. the chemical symbol for calcium, the fifth most abundant element in the earth's crust, having an atomic number of 20. Syn: calcium. [WordNet 1.5]
circa \cir"ca\ (s[~e]r"k[.a]), 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]
CA 1. <theory, architecture> {cellular automaton}. 2. <company> {Computer Associates}. 3. <cryptography> {Certificate Authority}.
ca <networking> The {country code} for Canada. (1995-04-19)
CA Certification Authority (cryptography, PKI)
CA Computer Associates (manufacturer)