1. Circumfrence divided by diameter.
2. How losers spell pie.
1. Nerdy: How much is pi?
Nerdier: 3.1415926535897932384...
2. Jake: Pass the pi!
Jess: Loser...
by madamerouge1331 May 22, 2010
The correct way of spelling pie when doing math.
The area of a circle is ∏r^2; The radius of the pie squared.
by JHVH November 13, 2010
Abbreviation of:

Prison Issue

Used to describe someone who looks like they are straight outta the slamma

Or perhaps a weapon can be P.I. like a handcrafted knife would be P.I. shit
Lets say your at a Denny's Restaurant and your waitress has more tattoos than a Miami Inc. Banner than she would be considered P.I.

Everyone would refer to her as P.I.
by Alphie82 June 12, 2009
Pigment Impaired-a white person, lacking pigment or color
Used in the presence of white people, when talking about them behind they're back
Damn, I hate these P.I.'s! They always think they runnin shyt...
by Tiffanyyyyyy June 27, 2007
iz tha action of a group beating up a single individual or a smaller group
gz get P.I.ed as an initiation to get into a gang
or for their birthday
la cacane a stLuc
by gunit ndg go habs go April 24, 2004
"Pi is an infinite, nonrepeating decimal - meaning that every possible number combination exists somewhere in pi. Converted into ASCII text, somewhere in that infinite string of digits is the name of every person you will ever love, the date, time, and manner of your death, and the answers to all the great questions of the universe. Converted into a bitmap, somewhere in that infinite string of digits is a pixel-perfect representation of the first thing you saw on this earth, the last thing you will see before your life leaves you, and all the moments, momentous and mundane, that will occur between those two points.

All information that has ever existed or will ever exist, the DNA of every being in the universe, EVERYTHING: all contained in the ratio of a circumference and a diameter."
the entire text of every single book can be found in pi

all 3 HDM books in order

all 7 Harry Potter books in order

books that haven’t even been written yet

and yeah not just books how about everyone’s entire family tree stretching back to when humans first had names

every word you ever spoke since birth

all the word ever spoken by the human race

pi is everything
by I0U June 21, 2013
Pronounced p-i, like pi. Again? P-EYE. It's short for PIOUS, although in the goody-goody sense. When someone is altruistic, you say they're pi.

First appeared in Enid Blyton's Malory Towers.
A: So they say that Cancers are always thinking of how to make life easier for others...
B: Oh, bitch, please.
A: And they say Cancers always love everybody, no matter what.
B: What the fuck? Are they even human?
A: And Cancers' primary focus is on the fam and taking care of those they love.
B: PI, PI, PI.
by finedoubter March 30, 2011

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