Search the Dictionary:

The A2 concept jet, which engineers say could make the journey from Brussels (or London) to Sydney in less than five hours, traveling at speeds up to 3,400 mph.


A high-speed stream of a fluid, such as gas or water, discharged from a small opening or nozzle. Jet propulsion is the thrust produced by a jet. You can demonstrate jet propulsion by blowing up a balloon and then releasing it and watching it move. A jet engine uses jets of burning gases to provide thrust to an aircraft, watercraft, and some land vehicles.