Also known as: hd.
HD has various meanings in the Governmental & Military category. Discover the full forms, definitions, and usage contexts of HD in Governmental & Military.
The measure of the pressure of water expressed in feet of height of water1 psi = 2.31 feet of water. The measure of pressure at the base or other reference point of a column of fluid. Normally measured in feet of water. The product of the water's weight and a usable difference in elevation gives a measurement of the potential energy possessed by water.
Governmental & MilitaryCoil type indicating that a produced coil or lift has problems that need to be resolved by the Quality Assurance department. A method of stopping the normal disposition of a record, usually because of court cases or investigations. 2.An order status that prevents certain modification types and transactions from processing the order or order line until the hold is released.
Governmental & MilitaryA cockpit system where data from flight instruments is projected onto a screen or the wind-screen so that the pilot can see it with-out having to look down.
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