Pescatarian: Excludes foods of animal origin but includes seafood, eggs, and dairy foods. Semivegetarian, Meatless Vegetarian, Flexitarian: These terms define eating styles based on a vegetarian diet but include small amounts of red meat, poultry, seafood, eggs, and/or dairy foods.
Overhead Valve (OHV) Engines. With the OHV design, the valves are located above the combustion chamber. As the name implies, Overhead Valve engines (OHV) have the valves located above the combustion chamber, in the cylinder head. The OHV layout permits. 1  smoother fuel mixture intake, 2  quicker and more complete exhaust.
A Pratt & Whitney F100 turbofan engine for the F-15 Eagle being tested in the hush house at Florida Air National Guard base. The tunnel behind the engine muffles noise and allows exhaust to escape. A jet engine is a reaction engine discharging a fast-moving jet that generates thrust by jet propulsion. This broad definition includes airbreathing jet engines (turbojets, turbofans, ramjets, and pulse jets) and non-airbreathing jet engines (such as rocket engines). In general, jet engines are combustion engines.