#initial-load-header-loader { visibility: hidden!important; } #initial-load-content { visibility: visible!important; } .expandable .expandable-control { display: none!important; } .expandable .expandable-content { display: block!important; visibility: visible!important; max-height: none!important; height: auto!important; }

I-head engine

[ahy-hed]

noun

an internal-combustion engine with both intake and exhaust valves placed directly above the piston.

RELATED CONTENT

Read more in this article about some frequently asked questions and fun facts related to our definitions.

basketball head

Read more in this article about some frequently asked questions and fun facts related to our definitions.

Also called overhead-valve engine, valve-in-head engine.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019