What is "intermediate range ballistic missile"

Missile \Mis"sile\, n. [L. missile.]

1. A weapon thrown or projected or intended to be projected, as a lance, an arrow, or a bullet.

2. A rocket-propelled device designed to fly through the air and deliver a warhead of explosive materials to a target.

   Note: Numerous types of rocket-propelled missile[2] are now used in modern warfare. Some types with names indicating their range or function are: antiaircraft missile; ballistic missile; cruise missile; antiballistic missile missile; air-to-air missile; air-to-ground missile; guided missile; intercontinental ballistic missile (IBM); intermediate range ballistic missile (IRBM); surface-to-air missile.

ballistic missile \bal*lis"tic mis`sile\, n. A rocket-propelled missile of long range which is guided only during the powered portion of its flight, which usually takes only a small part of the total flight time; -- contrasted with guided missile.

Note: Ballistic missiles are sometimes referred to by their range, such as an

intercontinental ballistic missile ( ICBM) or an

intermediate range ballistic missile ( IRBM).