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standard temperature and pressure

American  

noun

(used with a plural verb)
  1. the temperature of 0°C and pressure of 1 atmosphere, usually taken as the conditions when stating properties of gases. STP


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Butane, C4H10, is the fuel used in disposable lighters and is a gas at standard temperature and pressure.

From Textbooks Feb. 14, 2019

Basically, Clarke extrapolates the latest scientific theory and hardware into a future where good and evil are controlled under standard temperature and pressure.

From Time Magazine Archive

All gas values were corrected to standard temperature and pressure for dry gas.

From Metabolic Adaptation to Climate and Distribution of the Raccoon Procyon Lotor and Other Procyonidae by Mahlke-Johnson, Kathleen P.

The entropy is regarded as measured from some standard temperature and pressure.

From The Gutenberg Webster's Unabridged Dictionary Section D and E by Project Gutenberg

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