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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

  1. incestuous,
  2. incestuously,
  3. inch,
  4. inch along,
  5. inch by inch,
  6. inch plant,
  7. inch-pound,
  8. incher,
  9. inchmeal,
  10. 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