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Torr - Meaning, Definition & English Examples

A torr is a unit of pressure equal to 1/760 of an atmosphere, commonly used in vacuum measurements. It is named after the physicist Evangelista Torricelli.

torr

/tɔr/ /tɔː/

Definition:

A unit of pressure equal to 1/760 of standard atmospheric pressure.

Synonyms:

millimeter of mercury, mmHg, pressure unit

Part of Speech:

noun

Antonyms:

vacuum, zero pressure

Common Collocations:

torr measurement, torr scale, torr value

Derivatives:

torricellian, torrs

Usage Tips:

Use "torr" when discussing vacuum pressures or scientific measurements; avoid in everyday contexts.

Common Phrases:

under a torr of pressure, measured in torr

Etymology:

Named after Evangelista Torricelli, inventor of the barometer; from Italian "Torricelli."

Examples:

  • 1. The pressure inside the tube was 500 torr.
  • 2. Scientists often measure low pressures in torr for accuracy.
  • 3. One torr is roughly equivalent to one millimeter of mercury.
  • 4. The vacuum chamber reached a pressure below 1 torr.

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