Concrete block with several large holes through the core so that you can look through to the other side. The block amount is less than 75 percent of the total surface area.
Hollow ground
Also called taper ground, this way of grinding a blade to taper from a thicker cutting edge to a thinner section toward the hub to keep it from binding in the material being cut.
Hollow masonry
Construction of concrete masonry units, in a single section, one block thick, with the block ends filled with grout as each row is laid.
Hollow wall
Wall with an air space within the wall.
Hollow-core
Construction where the framework for a door is covered with thin plywood, which is supported by lightweight material in the framework center.
Hollow-core door
A flush door with plywood facing over framework that does not have a solid core.
Hollow-jet valve
A valve having a closing member that moves upstream to shut off the flow. The hollow-jet valve discharges a hollow or annular jet dispersed over a wide area.
Holographic will
Will that does not meet all the requirements of a valid will.
Home affordability index
Measure of the typical U.S. family's ability to buy a home, published by the National Association of Realtors. When the Index measures 100, a family earning the median income has exactly the amount needed to purchase a median-priced, previously owned home, using conventional financing and a 20% down payment. Some experts maintain that every one-point increase in the home mortgage interest rate results in 300,000 fewer home sales.
Home energy assistance program (heap)
A centrally operated direct payment program that assists eligible households in offsetting the cost of heating and cooling their homes. Payments are generally made in the form of dual party warrants (checks) made payable to the applicant and their designated utility company. For example, the program is administered in California by the California Department of Economic Opportunity using federal and state funds.
