Homonym: Hemi (Hemispherical)
A "Hemi" refers to an engine design known as a hemispherical combustion chamber. This design allows for better airflow and more efficient combustion, which can lead to increased power and performance. The term is often associated with Chrysler, a car manufacturer that popularized Hemi engines in their vehicles.
Hemi engines are characterized by their unique shape, which resembles a half-sphere. This design helps in achieving a higher compression ratio, improving engine efficiency. Hemi engines are commonly found in various muscle cars and performance vehicles, making them a favorite among car enthusiasts.