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15.
STP
An old adage from the 1960s to the 1980s, during the Indianapolis 500 glory days of the partyin' Snake Pit in Turns 1 and 4, meaning to "Start The Party." Of course, this was before the evil Tony George took over the Indianapolis Motor Speedway and made it family-friendly.
Hey Joseph, when will they STP during the month of May at the Speedway?
by L. Smitherman May 25, 2007
 
1.
STP
Shavin The Pubes!!
Jo- Cho- "yea foo so whats up? what are you doing?"

Bryant-Rachi- " ahhh foo stp, i got a date tonight.!!"
by Jo-Cho August 16, 2009
 
2.
Secret Tweaker Pad, from the Sublime song, S.T.P. It's a place where one can chill and do drugs and hide out after committing a crime.
Get out of my S.T.P!
by con4mconsumeobey January 18, 2005
 
3.
Stone Temple Pilots. Originally stood for Shirley Temple's pussy. But the band had to change the meaning when they became main stream.
The Band S.T.P. could still be a great band making great music if Scott Weiland could stay off the Horse.
by brutha from a nutha mutha May 20, 2006
 
4.
Standard Temperature and Pressure, a Chemistry term referring to gasses under normal or ideal conditions.
S.T.P for oxygen gas is 25 degrees c and 1 atm of pressure
by Steve December 04, 2003
 
5.
St. Paul, Minnesota's capitol city located in Ramsey County
Home of Eastside, Northend, Frogtown, Midway, Highland Park, ect
We rep that S.T.P. not 612
by Raul Concepcion May 22, 2008
 
6.
Stone Temple Pilots, a great band
by Anonymous September 29, 2003
 
7.
STP
Standard Temperature and Pressure
It is used to describe a substance at....
Pressure: 1 atm; 760 mmHg; 101,300 pascals
Temperature: 0°C, 32 F, 273.15 K (kelvin)

It is often used to describe gasses.
The water was starting to freeze at STP.
At STP one mole of gas will occupy 22.4 liters.
by Transpolar Drift Stream July 19, 2011