Abbreviation for 'XPISTOS', Greek for Christ.
Why does Father John have an XP on his robes?
by ScottX November 27, 2006
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1) Short-hand version of "Windows XP," one of Microsoft's operating systems for PCs.

2) The first two letters of the Greek word XRISTOS, Christ; -- an abbreviation used with the letters separate or, oftener, in a monogram, often inclosed in a circle, as a symbol or emblem of Christ. It use as an emblem was introduced by Constantine the Great, whence it is known as the Constantinian symbol, or monogram.
1) "XP is so much more stable than 98, but the work space is so small and they re-arranged the UI... again!"

2) "WHOA! I didn't know XP is the shortened Greek version of Christ!"
by R.P.G. May 2, 2003
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An emoticon for a sneering face, ie "You're an idiot!"

Also the name of a Window's operating system, ie "You're an idiot!"
by Hippy on a Bicycle October 22, 2003
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The International, Universal, Inter-galactical emoticon face of Constipation. Can be used in place of the words, constipated, constipation, constipate.

Commonly misinterpreted to be:
A) laughing-with-tongue-out
B) a version of Windows

Misuse can result in disgust and confusion.
Correct use:

Person C: "Hey, how are you today?"
Person D: "I'm pretty good. A little XP"
Person C: "Oooh, damn. Want a Laxative?"
Person D: "Thanks that would be awesome!!!"

Misuses:

Misuse 1:

Person X: "...then she told this joke and I was all XP!!!"
Person Y: "Ew, you're Disgusting!!!" *Pukes*

Misuse 2:

Person X: "Hey, what's your computer on?"
Person Y: "Windows XP"
Person X: "Ouch. I know the feeling, man."

Misuse 3:

Person Y: "I wanna make you XP"
Person X: "Excuse me???"
by Goodness June 22, 2007
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The latest operating system to be conceived by Microsoft. XP is short for experience.
"TheMann can't afford to buy XP, it seems his rusty trombones are cheap."
by pro-nun-see-A-shun January 1, 2003
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I collect XP and learn new things all my life long
by INDX May 4, 2020
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Short for eXtreme Programming: a software development methodology that favors small teams and an iterative, design-as-you-go approach.
We use XP in our software shop.
by slonob February 1, 2004
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