mm Hg


mm Hg

noun
\ˈmil-ə-ˌmēt-ər-əv-ˈmər-kyə-rē, -k(ə-)rē\

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)

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