Dome Pistons are used in 2 stroke engines.
Some alternative designs for pistons include domed pistons, flat-top pistons, and dished pistons. These designs are used to alter the compression ratio of the engine, improve combustion efficiency, and achieve specific performance characteristics. Domed pistons can increase compression ratio for more power, flat-top pistons can improve flame propagation, and dished pistons can reduce compression ratio for better fuel efficiency.
There are many, many types of pistons. The pistons of a 4-cycle gasoline internal combustion engine are different from those in a diesel powered or two-cycle two cycle engines. There are other alternative fuels that require specialized pistons too. Then within a group, such as 4-cycle gasoline automobile engines there can be domed, or pistons with valleys or cut-outs for the valves. There short sleeves, long sleeves, thick or thin wall, or cuts for different types of rings. There are literally thousands of different types or variations of pistons.
The two main types of piston heads are flat top and dome top. Flat top pistons have a flat surface, while dome top pistons have a raised dome shape on the top surface. Other variations include dish top pistons and reverse dome pistons.
Hemi is short for hemispherical. It refers to the heads on an engine that are basicaly domed in shape. It is supposed to provide more compression area allowing more fuel mixture to be ignited at a time thus increasing horsepower. I'm fairly certain I'm remembering the definition correctly.
A domed hall is a rotunda.
It is called the Domed Rotunda
It's all about flow, which is what makes power in an internal combustion engine. With a domed (aka hemispherical) cylinder head, the intake valve is on one side and the exhaust valve on the other, with the spark plug in the center of them. The Chrysler hemi did it with 2 valves and pushrods back in the early 1960's and the modern reincarnation is still doing it that way. 4 valve cylinder heads do the same thing, only with 2 intake valves and 2 exhaust valves, using overhead cams.
Domed--granite batholiths.
Dominic Thomas Domed goes by Dom Dom.
Domed Rodrigues giant tortoise was created in 1835.
Domed Mauritius giant tortoise was created in 1873.
It is a domed tomb.