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torr Syllabification: torr

Definition of torr in English:

noun (plural same)

A unit of pressure used in measuring partial vacuums, equal to 133.32 pascals.
Example sentences
  • The ALS is one of only two places in the world where photoelectron spectroscopy can be performed on surfaces at pressures above 1 torr (a unit of pressure equivalent to 1 millimeter of mercury in a barometer).
  • The dynamic investigations were carried out under continuous conditions, which were 6 torr with a relative humidity of 80%.
  • The QTC provides repeatable and stable leak-rate measurements from 5 × 10-11 up to 0.2 std-cc/s and a maximum test pressure of 15 torr.

Origin

1940s: named after E. Torr (see Torricelli, Evangelista).

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