The Collaborative International Dictionary of English v.0.48:

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]

WordNet (r) 3.0 (2006):

M2
    n 1: a measure of the money supply; M1 plus net time deposits
         (other than large certificates of deposit)

The Free On-line Dictionary of Computing (30 December 2018):

m2

   A Modula-2 compiler for VAX and MIPS.  A Pascal
   compiler for VAX is also included.  The Pascal compiler
   accepts a language that is almost identical to Berkeley
   Pascal.  It was originally designed and built by Michael L.
   Powell in 1984.  Joel McCormack made it faster, fixed lots of
   bugs, and swiped/wrote a User's Manual.  Len Lattanzi ported
   it to the MIPS.

   It has the following extensions: foreign function and data
   interface, dynamic array variables, subarray parameters,
   multi-dimensional open array parameters, inline
   procedures, longfloat type, type-checked interface to C
   library I/O routines.

   It runs on VAX (Ultrix, BSD) and MIPS (Ultrix).

   (ftp://gatekeeper.dec.com/pub/DEC/Modula-2/m2.tar.Z).

   E-mail: .

   (1992-07-06)