Injection

1. The act of injecting or throwing in; -- applied particularly to the forcible insertion of a liquid or gas, by means of a syringe, pump, etc.
2. That which is injected; especially, a liquid inserted thrown into a cavity of the body by a syringe or pipe; a clyster; an enema.
1. The act or process of filling vessels, cavities, or tissues with a fluid or other substance.
2. A specimen prepared by injection.
3. The act of throwing cold water into a condenser to produce a vacuum.
4. The cold water thrown into a condenser.
Injection cock, or Injection valve (Steam Eng.),
the cock or valve through which cold water is admitted into a condenser.
Injection condenser .
See under Condenser.
Injection pipe ,
the pipe through which cold water is through into the condenser of a steam engine.
fuel injection ,
a method of inserting fuel into internal-combustion engines by directly forcing the liquid fuel into the combustion chamber at an appropriate point in the piston cycle; in contrast to carburetion, in which an air-fuel mixture is drawn in by the downward stroke of the piston.