Alabama pi

The number 3.

Using the number 3 instead of the real value for pi because you are no better at math than the average redneck.

A hoax news article posted on the Internet saying that Alabama was changing the value of pi to 3. Many people believed that Alabama would actually do this.

I just did some real quick calculations in my head using Alabama pi.

by Bloopy April 9, 2005

Sigma Pi

A house of learn-ed doctors since 1933.

Also known for their no-bullshit, traditional ways.

Female1: "Did you hear? There's a Sigma Pi coming to this campus!"
Female2: "Oh yes, I did hear! I cannot wait for them to come all this way to give me their seed!"

by reefstiz May 13, 2009

Alpha Epsilon Pi

Located in many many universities around the country, Alpha Epsilon Pi has existed since 1913, when it was founded at NYU.

This is a nationally Jewish social fraternity, althoughon many campuses, non-Jewish men are members.

At Towson University, the Tau Mu chapter has had the highest GPA for almost 2 years.

Mark Zuckerberg, the man who created Facebook, is a member of AEPi from the Harvard chapter.

Alpha Epsilon Pi brothers are cooler than the other side of the pillow.

by TugboatKirby February 6, 2007

Pi Persecution

When the number π is being spied 24/7/365 online and trolled by envious or jealous numerical constants, who couldn’t stand her global appeal or fame, as thousands of mathematicians and math educators worldwide maniacally devote an obscene number of hours every year trying to discover hidden properties about her.

Constants like e and 𝛷, conspiring with √2 and i, have been repeatedly accused of pi persecution, because they’ve allegedly or unprovenly ganged up to serially and spitefully downvote any old and new Urban Dictionary entries on π every day.

by Fasters January 23, 2022

Apple Pi

An irrational snack for mathematicians

Isaac Newton: "Hmm... how what connection can I make between gravity and 3.14159265358979323846264338327950288419716939937... ? - I know! Apple Pi!

by hyphens_attack October 21, 2011

PI

Abbreviation for private investigator. Often hired by people to get information of somebody else's activities or to solve crimes that the police for one reason or another won't investigate themselves.

"I had to hire a PI to find out who killed my friend."

by IceWarm June 18, 2004

pi phi

1. Defined as the group of womes composed of the hottest girls you can find on a college campus.

2. Party chicks who get all the guys making the other greek chicks jealous, and single

Did you see those new pi phi pledges? They're fucking hot, just like the other pi phis!

by Spring of 05' January 11, 2005