Torr

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Torr

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Provisional international standard term to replace the English term millimeter of mercury and its abbreviation mm of Hg (or the French mm de Hg ). The torr is defined as 1/760 of a standard atmosphere or 1,013,250/760 dynes per square centimeter. This is equivalent to defining the torr as 1333.22 microbars and differs by only one part in 7 million form the International Standard millimeter of mercury. The prefixes milli and micro are attached without hyphenation. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use