Torr

name, noun, symbol

name, noun, symbol ·1 syllable ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Archaic form of tor. alt-of, archaic
  2. 2
    A unit of pressure that is equal to approximately 0.001316 atmospheres or 133.3 pascals.
  3. 3
    Alternative form of torr (“measure of pressure”). alt-of, alternative
  4. 4
    a unit of pressure equal to 0.001316 atmosphere; named after Torricelli wordnet
Symbol
  1. 1
    The unit symbol for a torr (“unit of pressure”)
Proper Noun
  1. 1
    A surname.

Synonyms

All synonyms
millimeter of mercurymillimeter of mercurymm hg

Etymology

Etymology 1

From Middle English torr, from Old English torr.

Etymology 2

Clipping of Torricelli; named after Italian physicist Evangelista Torricelli (1608–1647), who discovered the principle of the barometer.

Etymology 3

Clipping of Torricelli. Named after Italian physicist wplink.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.