STP

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STP

(ĕ′tē′pē′)

Standard temperature (273.15K or 0°C) and pressure (1 atmosphere or 10⁵ pascals), used chiefly in measurements of gases.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

STP

abbreviation for

1. (Elements & Compounds) trademark scientifically treated petroleum: an oil substitute promising renewed power for an internal-combustion engine

2. (General Physics) Also: NTP standard temperature and pressure: standard conditions of 0°C temperature and 101.325 kPa (760 mmHg) pressure

3. (Education) Professor of Sacred Theology

(Recreational Drugs) a synthetic hallucinogenic drug related to mescaline

[Sense 3 from Latin: Sanctae Theologiae Professor]

[Sense 4 from humorous reference to the extra power resulting from scientifically treated petroleum]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

STP

a potent long-acting hallucinogen.

[1965–70; probably after STP, trademark of a motor-oil additive]

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Noun

STP - standard temperature and pressure

s.t.p.

atm, standard atmosphere, standard pressure, atmosphere - a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade

standard temperature - exactly zero degrees centigrade

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