Standard Lemma guide

torr

name · noun · symbol · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • CMU ARPABET: T AO1 R Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

name

Meaning 1

A surname.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Archaic form of tor.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, archaic

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A unit of pressure that is equal to approximately 0.001316 atmospheres or 133.3 pascals.

Definition source: English Wiktionary via Wiktextract

Topics: metrology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Torr, millimeter of mercury

Antonyms: none provided

4

noun

Meaning 4

Alternative form of torr (“measure of pressure”).

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, alternative

Topics: metrology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

symbol

Meaning 5

The unit symbol for a torr (“unit of pressure”)

Definition source: English Wiktionary via Wiktextract

Topics: metrology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

a unit of pressure equal to 0.001316 atmosphere; named after Torricelli

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: millimeter of mercury, mm Hg

Antonyms: none provided

Broader terms: pressure unit

History

Etymology

From Middle English torr, from Old English torr.

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

Clipping of Torricelli. Named after Italian physicist Evangelista Torricelli.

Across languages

Translations

11 source translations are retained for this English entry.

  • Chinese Mandarin: 托 (tuō) — unit of pressure
  • Chinese Mandarin: 乇 (tuō) — unit of pressure
  • Czech: torr — unit of pressure
  • Faroese: torr — unit of pressure
  • Finnish: torri — unit of pressure
  • Italian: torr — unit of pressure
  • Japanese: トル (toru) — unit of pressure
  • Korean: 토르 (toreu) — unit of pressure
  • Polish: tor — unit of pressure
  • Portuguese: torr — unit of pressure
  • Swedish: torr — unit of pressure