definitions

inch of mercury

noun

a unit of atmospheric pressure, being the pressure equal to that exerted by a column of mercury one inch high under standard conditions of temperature and gravity: 33.864 millibars. Abbreviation: in. Hg

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Nearby words

incest, incestuous, inch, inch along, inch by inch, inch of mercury, inch plant, inch-pound, incher, inchmeal, inchoate

Origin of inch of mercury

First recorded in 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019