Millimeter of mercury
Abbreviation/Symbol:
- mm Hg
Unit of:
- Pressure
Definition:
1 mm of mercury is the pressure exerted by a 1 inch high column of mercury, now defined as 133.322387415m pascals
Common references:
- Normal blood pressure for adults is below 140 mm Mercury (systolic) and below 90 mm Mercury (diastolic)
Usage context:
Has found widespread use in medicine (measuring bloody pressure, etc.) and meteorology