OTA 

Standing for "Offer To Adopt", it's a term mostly used on art websites such as DeviantArt for adoptables. You can buy them winning a bid or autobuying them.

OTA girl - 10$ for Starting Bid, 50$ for Autobuy!

Person A: Start bid
Person B: 15$
Person A: 20$
Person C: Autobuy
Person A & B: Darnit!

OTA by Mirigiry January 13, 2016

OTA 

Organized Team Activity. Often used to describe preseason activities in the NFL. Sometimes incorrectly defined as Offseason team activities.

Brian Urlacher did not report to Bear's voluntary OTAs today, citing contract disagreement with the team.

OTA by aljezzera June 11, 2008

OTA 

Original Team Arrow
Consists of Oliver, Diggle, and Felicity from Arrow

OTA is so much better than the new team.

OTA by Dwilly123 December 13, 2016

OTA 

In ballroom "OTA" means open to all so anyone can come and perform if they'd like to.

Hey are you coming to the ball tonight? It's OTA.

OTA by Rlobfiah January 1, 2021

OTA 

The shortened term for the Overwatch Transhuman Arm, a division in the Universal Union in the Half Life universe.

resistance bloke: THEY'RE RAIDING THE AREA WITH OTA- (gunfire) (male_citizen_pain.mp3)

OTA by VinnisVidya May 16, 2018

OTA 

On the air, used when talking about radio or DJs.

"This is DJ Bender OTA with you today on Frogbox Radio."

OTA by KalvPants May 1, 2010

ota 

acronym meaning "out the ass"

Man strega I wish I could give you a ride home but I've got homework ota.

ota by civicguy22 October 16, 2011