12-Letter Words Containing: H,E,G,I,R,A

• the act of writing dictionaries

• To protect a structure against damage by the weather.

• A protective coating, or layer of insulation, as on a house or car.

• a broad highway designed for high-speed traffic

• an extensive electronic network (such as the internet) used for the rapid transfer of sound and video and graphics in digital form

• To lower the velocity and kinetic energy of fast neutrons in a nuclear reactor by use of a moderator, and thus increase the efficiency of fission

• a standard by which something can be measured or judged

• a surveyor's mark on a permanent object of predetermined position and elevation used as a reference point