An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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standard temperature and pressure (STP)
  دما و فشار ِ استانده  
damâ o fešâr-e estândé
Fr.: conditions normales de température et de pression  

  1. The most commonly used definition is temperature of 273.15 K (0 °C) and pressure of 1 → atmosphere.

  2. Chemistry: Temperature of 273.15 K (0 °C) and pressure of 105  → pascal (Pa)s (1 → bar). International Union of Pure and Applied Chemistry (IUPAC) recommends that the former use of the pressure of 1 atm as standard pressure (equivalent to 1.01325 × 105 Pa) should be discontinued.

See also: → standard; → temperature; → pressure.