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The actually abbreviation for the year 2010 based off of the roman numerical system.
It is now year MMX or "2010."
MMX by Alex the Chao January 1, 2010
Related Words
MMX MMXI mmxzyl MMX = 2010 MMXC MMXer MMXI = 2011 MMXII MMXIII MMXX
MMX refers to the Class of 2010. Literally it is roman numeral 2,010, but has been adapted to fit the Class of '10.
MMX will be the best senior class ever!

The new seniors, MMX, are just outstanding.
MMX by deemuny June 3, 2009
The Roman numeral for the year 2010.

M = 1000 + M = 1000 + x = 10
Dude, I'm calling 2010, MMX. Wicked, cool name for the year
MMX by Typhoid Raj January 2, 2010
Abbreviation for the game Megaman X, made by Capcom.
I like the original MMX over the new ones.

Capcom made too many MMX games.
MMX by Onager October 29, 2009

MMX = 2010 

If you've made it past the 3rd grade, then you know that MMX is Roman numeration for 2010. Of course if you are totally stupid, dude, then you use 2KX.
Hey dude, I am totally stupid; I tell people that the Romans wrote 2010 as 2KX. The correct usage is MMX = 2010.
MMX = 2010 by Pamukale January 1, 2010