torr

noun

plural torr
: a unit of pressure equal to ¹/₇₆₀ of an atmosphere (about 133.3 pascals)

Examples of torr in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The vacuum pressure in the analysis chamber was 2.1 × 10−10 torr to 3.0 × 10−10 torr during analysis facilitated by a liquid nitrogen cold trap53. Keith Cooper, Space.com, 16 July 2025

Word History

Etymology

after Evangelista torricelli

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of torr was in 1949

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Cite this Entry

“Torr.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/torr. Accessed 5 Aug. 2025.

Medical Definition

torr

noun
plural torr
: a unit of pressure equal to ¹/₇₆₀ of an atmosphere or about 0.019 pounds per square inch or about 133.3 pascals

More from Merriam-Webster on torr

Last Updated: - Updated example sentences
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