'M2' definitions:

Definition of 'M2'

From: WordNet
noun
A measure of the money supply; M1 plus net time deposits (other than large certificates of deposit)

Definition of 'M2'

From: GCIDE
  • M2 \M2\ n. A measure of the money supply broader than M1 but narrower than M3, comprising M1 plus net time deposits (other than large certificates of deposit). [WordNet 1.5]