What does M stand for?

What does M mean?

M	male, married, meridian Community
M	Music Academic & Science » Academic Degrees
M	Man Business » Positions
M	Making Business » Accounting
M	Model Governmental » Military
M	Management Business » General
M	Mobile Computing » Software
M	Mr Miscellaneous » Unclassified
M	Manual Miscellaneous » Unclassified
M	Mind Miscellaneous » Unclassified
M	Metal Miscellaneous » Unclassified
M	Matter Miscellaneous » Unclassified
M	Mom Miscellaneous » Unclassified
M	Manual Governmental » NASA
M	Mark Miscellaneous » Names and Nicknames
M	Message Governmental » US Government
M	Multiple Academic & Science » Physics
M	Microsoft Business » Firms
M	Michael Miscellaneous » Names and Nicknames
M	Million Miscellaneous » Unit Measures
M	Method Academic & Science » Mathematics
M	Modern Community » Performing Arts
M	Mission Governmental » Military
M	Memory Computing » Hardware
M	Months Miscellaneous » Unit Measures