CaThe symbol for calcium.CAabbr.1. California2. Central America3. chartered accountant4. chief accountant5. chronological age6. current accountcaabbr. circaAmerican Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.ca the internet domain name for (Computer Science) Canada Ca the chemical symbol for (Elements & Compounds) calcium CA abbreviation for 1. (Placename) California 2. (Placename) Central America 3. (Accounting & Book-keeping) chartered accountant 4. (Accounting & Book-keeping) chief accountant 5. (Government, Politics & Diplomacy) consular agent 6. (Commerce) (in Britain) Consumers’ Association Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ca’ (k?, k?) v.t., v.i. Scot. to call. [variant of call] CA California. Ca Chem. Symbol. calcium. ca- var. of ker-. ca or ca., (with a year) about: ca 476 b.c. [