Also known as: hd.
HD stands for various terms. Discover the full forms, meanings, and possible interpretations of HD across different fields and industries.
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.
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