mm Hg

noun
\ ˈmil-ə-ˌmēt-ər-əv-ˈmər-kyə-rē, -k(ə-)rē How to pronounce mm Hg (audio) \

Medical Definition of mm Hg

: a unit of pressure equal to the pressure exerted by a column of mercury 1 millimeter high at 0°C and under the acceleration of gravity and nearly equivalent to 1 torr (about 133.3 pascals) The pulse was 110 beats per minute and the blood pressure was 105/60 mm Hg— Michael Drancourt et al., The New England Journal of Medicine, 16 Feb. 1995 34% of treated eyes had only a transient rise in intraocular pressure of 5 mm Hg or more …— David Frankel, The Lancet, 27 Dec. 1995

Comments on mm Hg

What made you want to look up mm Hg? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a haphazard or makeshift solution

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!