big O 

an orgasm, usually intense.

"He got me to the big O last night.

big O by Starla Pureheart June 29, 2002

Big O 

Paradigm City is a place without a past. 40 years ago, something happened that wiped away the memories of everyone in it. Unfortunately, the people of Paradigm City were very busy before then, making Megadueses (giant robots) and monsters. People who were born after the memory wipe are gaining/recovering memories of the past and using them to build newer threats. Roger Smith keeps Paradigm City safe with the help of The Big O (a faithful giant robot), his butler Norman, and the android Dorothy. As problems mount and more memories surface, Roger's past and Paradigm's future begin to become suspect.

Big O aired in the U.S. on Toonami in 2001. There are a total of 26 episodes.

Big O by ♫ Highway to Hell ♫ September 10, 2010

Big O 

super intense orgasm in which female ejaculate is released (not urine)... speculation puts phenomena at 1 out of 20 women able to achieve

Cheryl knew all about the Big O

Big O by TXDOC July 28, 2008

big O 

1. an orgasm, a sexual climax

2. opium

Once I reach the big O, there is no turning back.

big O by The Return Of Light Joker November 26, 2007

Big O 

A notation used to denote the run-time of a given algorithm.

"So our lower bound here is O(n log n)."
"Nope. Got it in O(n log(log n))."
Elaine bested Donald Knuth at Big O Notation. So she left.

Big O by Advanced Programmer April 22, 2009

big O 

a giant robot in the anime big O

guy:*looks at watch* BIG O! *robot appears*

big O by O_oo_O July 17, 2003

big O 

one who is large, cheerful, and especially O-ish in nature

"Big O has got to be the coolest kid in the world.....next to Kearney"

big O by Big O April 23, 2003