What does M stand for?

@george_mcgeorge
Matrix is another.Modulus,Metric or in physics,Mass.

@ Dukedog said in #31:
> @ george_mcgeorge
> Matrix is another.Modulus,Metric or in physics,Mass.
I loved your Metaphysical post (#25). But yeah, Matrix outside the movie business is very mathematical. :)

Mother

Mature most likely

Nope no one got it correct yet

Love @DaniAlYazdAni (Best Answer) but not correct

@Diaconu_Teodora said in #21:
> Magnus Carlsen. CORRECT