AO

Area of Operations. Army-speak.

When the General showed up at the barracks it was time to unass the AO.

by Parnelli Joneser May 7, 2005

AOS

short for "ahead of schedule"

"we made a pit stop to grab some munchies and gas, and STILL we made it there AOS!"

by Bonzai April 11, 2007

AO

..is short for ‘Adults Only’ (most extreme videogame rating in the U.S.). See also the other vg ratings: EC(Early Childhood), K-A(Kids to Adults; was replaced by 'E' in 1996), E(Everyone), E10+(Everyone ten years of age or older), T(Teen), M(Mature Audience), AO(Adults Only), and ESRB.

GTA:SA(Grand Theft Auto: San Andreas) is no longer rated 'M', but instead 'AO', and subsequesntly is no longer on the shelves, barely in stock at all.

by Victor Van Styn August 22, 2005

AoS

Arc of Suck

A term used to refer to bad storylines in TV shows.

It is most often used in Smallville forums to refer to the Season 8 arc when Lana Lang returned to Smallville for a few episodes, during which time Lois was absent.

After Lana came and went during the AoS, Clois really lost its mojo.

by canon_iconic_suckit March 12, 2010

AOS

AOS is short for Academy of Science, aka "Academy of Swag". It's a Loudoun County Public School. The members attend their home high school, like Stone Bridge, Broad Run, Briar Woods... on one day and AOS on the other. It's the best of both worlds!

Woah, you go to AOS? You got swaaag.

by nerdygirl:) October 25, 2011

AO

..is short for ‘Adults Only’ (most extreme videogame rating in the States). See also: EC, K-A, E, E10+, T, M, AO, and ESRB.

GTA:SA is no longer rated 'M', but instead 'AO', and subsequesntly is no longer on the shelves, barely in stock at all.

by Victor Van Styn August 22, 2005

AO

Armpit odour.
Also known as PO. Similar to BO but somebody with AO reeks very strongly of funky pits.

Piss you!!! That dude that just went past has a terrible case of AO!!! :-(

by Telephony July 25, 2020