hemi-head

or hem·i·head

[ hem-i-hed ]

noun

1. a cylinder head having hemispherical combustion chambers.
2. an engine having such a cylinder head; a hemi.

adjective

1. of or relating to such an engine:

   a hemi-head V-eight.

Word History and Origins

Origin of hemi-head¹

First recorded in 1960–65