valve-in-head engine

1. 1.

   internal-combustion engine having both inlet and exhaust valves located in the cylinder head

   Broaderinternal-combustion engine

Questions about valve-in-head engine

What does valve-in-head engine mean?

valve-in-head engine means "internal-combustion engine having both inlet and exhaust valves located in the cylinder head".

Is valve-in-head engine a common word?

valve-in-head engine is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.