M2 symbol for (Economics) the amount of money in circulation in notes and coin plus non-interest-bearing bank deposits, building-society deposits, and National Savings accounts Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014