A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

heat sink - a device that naturally absorbs solar energy during the day, stores it, and then releases it back into the room at night; example: a wall of plastic bottles filled with water.

hieroglyphics - a system of writing with pictures that was used by the ancient Egyptians

historic preservation - keeping a building in its existing form by preventing more change or deterioration

hod carrier - a laborer hired to carry supplies to bricklayers, stonemasons, cement finishers, or plasterers on the job

housing unit - a house, apartment, mobile home, or a room counted as a separate living area