Top definition
The abbrivation for Myocardiac Infarction
aka Heart Attack
commonly used in hospitals
Nurse: This patient is having an MI!
by ER freak December 24, 2005
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2
Swedish abbreviation for Mechanical Integrity.
What is the impact on cost and MI compared with the previously presented version (Opt 1)?
by Lars the Destroyer September 23, 2010
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3
MI means middle initial. commonly used in forms of any type requiring your full name.
Last Name: Smith First Name: Bob MI:L
by Phil bamf February 25, 2008
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4
1) An acronomn for "Mentally Ill" (in Pyschology)
2) An acronomn for "Military Intelligence" (in International Affairs)
What the hell? I fucking swear, whoever "aquired" this MI had to have been MI! There's no other way!!!
by Nick Ulanowski June 04, 2007
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5
Rice in Chinese

The last name of a very big asian that lives in New York, studies at Tulane, and will be traveling the world as a Army Officer.
My most favorite person in the world is David Mi.
by David Mi May 04, 2005
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6
Military Intelligence

Combat Support Branch of the US Army

www.branchorientation.com/militaryintelligence/
He branched MI after taking ROTC in College.
by Jeremey April 24, 2005
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7
An abreviation of Mobile Infantry
Mobile Infantry, from Starship Troopers (good book, shite movie)
by Dirge December 24, 2004
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