Arctic Jet: The jet stream that is situated high in the stratosphere in and around the Arctic or Antarctic Circles. It marks the boundary of polar and arctic air masses.

 

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Arctic Jet: The jet stream that is situated high in the stratosphere in and around the Arctic or Antarctic Circles. It marks the boundary of polar and arctic air masses.

Jetty: A human made structure built at right angles to a coastline and extending into the water. Jetties are built to protect an area of shoreline from the effects of currents, erosion or deposition.

Jete: Jete is a jump from one foot to the other (like a leap), in which one leg appears to be 'thrown' in the direction of the movement (front, back or sideways). There are several kinds of jetes, . . . View Full Definition

Jet Stream: An area of strong winds that are concentrated in a relatively narrow band in the upper troposphere of the middle latitudes and subtropical regions of the Northern and Southern Hemispheres. F . . . View Full Definition

Jet Propulsion: that form of propulsion produced when a relatively small mass of air is given a large amount of acceleration.

Jet Streak: A region of accelerated wind speed along the axis of a jet stream.

Jumbo Jets: the name given to wide-bodied airplanes such as the Boeing 747, 757, McDonald Douglas DC-10, Lockheed L-1011, and the A-300 Airbus, etc.

Polar Jet: Marked by a concentration of isotherms and strong vertical shear, this jet is the boundary between the polar air and the subtropical air. It often divides into two branches, the north and th . . . View Full Definition

Subtropical Jet: Marked by a concentration of isotherms and vertical shear, this jet is the boundary between the subtropical air and the tropical air. It is found approximately between 25° and 35° North lati . . . View Full Definition

Turbojet: An aircraft having a jet engine in which the energy of the jet operates a turbine that in turn operates the air compressor.