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5.
MOA
Military Operations Area

Areas on aeronautical sectional charts designated to be known areas of military aircraft operation. Pilots are encouraged to use extreme caution when passing through a MOA
MOAs are most usually found in and around military air bases
by Conrad P. Rustek March 09, 2006
 
1.
MOA
An acronym for Minuet of Angle. It is a angular measurement of exactly 1/60th of 1 degree, commonly used in astronomy and ballistics, and any other field that requires such minute measurements.
M4's are guaranteed to have a sub-MOA grouping when properly shot and zeroed.
by lurch/brittney/creepyguy August 18, 2011
 
2.
Mother Of All Secrets, the biggest/serious/interesting secret a person can have without exploding.
"Tell me your biggest secret..."
"No way man, I'm not telling you my MOAS!"
by Lola1985 September 16, 2008
 
3.
MOA
Acronym meaning: Move On Already
Her - OMG! I just saw on facebook he's dumped the bitch he cheated on me with and is now going out with a duck-faced oompa-loompa. I can't stand seeing him with all these girls when he could have been happy with me!!!

Me - FFS MOA!!! He's a douche-bag. Rise above it coz ur not gonna find anyone else by sitting at home stalking the prick!
by International Gypsy November 03, 2012
 
4.
MOA
Michelle Obama Arms.
I heading to the gym to get some MOA!

Or

Dang girl! Have you been working out? You have some fine MOAs.
by meanderer April 22, 2009
 
6.
"Made of Awesome" — abbreviated
These people are M.O.A.
by NM. September 27, 2010
 
7.
MOA
Acronym for Missed Opportunity Abortion.
Douche-bag, putz, a waste of the genetic process.
"What do you call a Douche-bag passed out on the grass?"
"A lawn-MOA"
by JozoFine December 30, 2011