TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MILLIMETER MERCURY [1 record]

Record 1 2013-09-18

English

Subject field(s)
  • Metrology and Units of Measure
DEF

A unit of pressure equal to the pressure exerted by a column of mercury 1 millimeter high at sea level and at temperature of 0 °C (32 °F).

CONT

The abbreviation mm Hg stands for millimeters (mm) of mercury (Hg). It is a common unit of measurement for the pressure exerted by gases such as air. Normal atmospheric pressure is 760 mm Hg.

French

Domaine(s)
  • Unités de mesure et métrologie
DEF

Unité de pression (1 333 baryes).

CONT

La pression atmosphérique est mesurée en pascals (unité du système international). Nous avons coutume, par simplicité de lecture, à utiliser un multiple de cette unité : l'hectopascal (hPa). La pression standard est PO = 101325 Pa soit 1013,25 hPa. Le pascal correspond au millibar autrefois employé. Il existe, en outre d'autres unités de mesure de la pression : le millimètre de mercure (mm Hg), l'atmosphère (atm), le pouce de mercure (in Hg).

CONT

[...] le millimètre de mercure : 776 mm de Hg = 1,013.105 Pa.

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
DEF

Unidad de presión [casi] igual a 1 torriceli.

OBS

Un símbolo […] es una representación gráfica generalmente del ámbito científico con validez internacional: unidades básicas y derivadas del sistema internacional (kg, m, s), elementos químicos (S, de azufre; K, de potasio, o N, de nitrógeno), operaciones matemáticas (+, %), unidades monetarias ($, €), etcétera. Como se ve, a diferencia de las abreviaturas, que son siempre acortamientos gráficos de la palabra que desarrollan (tel., de teléfono), los símbolos son invariables en plural y no llevan punto abreviativo.

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