ATG

Ass-to-Grass. A type of squat in weight lifting where one goes as deep as possible.

1)I'm squatting ATG today for 5x5.
2)If you want to get swole, you gotta squat ATG!

by Mr. Deeds October 24, 2006

ATG

All time great

ATG NBA superstar Allen Iverson was inducted into the Naismith Memorial Basketball Hall of Fame on April 4, 2016.

by bjscool May 18, 2016

ATG

ATG=Any Thing Goes. Usually said in conversation before a crazy night out with someone.

"what you wanna do tonight?"
"Idk, ATG."
"Aright that's cool with me"

by NervousClassGoerSaysRoar September 07, 2012

ATG

ATG (Anti-thymocyte globulin or AtgamÒ) is a medicine used prevent rejection in different types of transplantation, treatment of graft versus host disease and in certain patients with aplastic anemia. It does this by suppressing the body's own immune system. It is available as an injectable medication.

Got some shitty news about the ATG tonight. It's not working.

by q February 01, 2005

ATG

abbreviation for 'at the gym'

brb lol atg.

by trano December 28, 2011

ATG

According to Google

ATG the sun rises from the east.

by S2NV February 15, 2019

ATG

ATG stands for Autistic Tongue Group. People who stick their tongues out when they take selfies are classified as an “ATG”.

You’re now officially an ATG for taking a selfie with your tongue sticking out.

by cherryvaginaslayer January 01, 2019