What does A.C. stand for?

What does A.C. mean?

AC	Albert Clifford Miscellaneous » Names and Nicknames
AC	After the Cataclysm Governmental » US Government
AC	Almost Country Community » Music
AC	Amplifier Combo Community » Music
AC	Amazing Cat Miscellaneous » Funnies
AC	Air Commander Governmental » Military
AC	Amplifier Combination Academic & Science » Electronics
AC	Active Count Academic & Science » Chemistry
AC	Ambulance Chaser Community » Law
AC	Another Cat Miscellaneous » Names and Nicknames
AC	Aunt Cindy Miscellaneous » Names and Nicknames
AC	Aunt Carol Miscellaneous » Names and Nicknames
AC	Anne Cameron Community » Famous
AC	Acceptable Content Internet » Chat
AC	Air Cavalry Governmental » Military
AC	Alt Cataclius Internet » Chat
AC	Authorization Center Computing » Telecom
AC	Armed Constabulary Governmental » United Nations
AC	Adriamycin and Cytoxan Academic & Science » Chemistry
AC	Army Company Governmental » Military
AC	Academic Counsellor Business » Positions
AC	Andrew Colin Miscellaneous » Names and Nicknames
AC	Aqua Color Miscellaneous » Colors
AC	Armored Convoy Governmental » Military
AC	After Crowning Community » Sports