Millimeter of Mercury

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Millimeter of Mercury

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A unit of pressure corresponding to a column of mercury exactly 1 millimeter high at 0� C under standard acceleration of gravity of 980.665 centimeters per second square. See torr. </dd>
By mercury at 0� C is meant a hypothetical fluid having an invariable density exactly 13.5951 grams per cubic centimeter. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use