IRBM

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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}).
        [PJC]