WordNet (r) 3.0 (2006):

UFO
    n 1: an (apparently) flying object whose nature is unknown;
         especially those considered to have extraterrestrial
         origins [syn: unidentified flying object, UFO, flying
         saucer]

The Free On-line Dictionary of Computing (30 December 2018):

UFO

    (United Functions and Objects) A hybrid
   functional and object-oriented language designed by John
   Seargant at Manchester University for general-purpose
   parallel computation.

   To a first approximation, UFO is a strict, higher-order
   functional language with an object-oriented type system, and
   strong support for numeric computation in the form of
   SISAL-style arrays and loops.  Parallelism is implicit, and
   applies at various different levels of granularity, thereby
   facilitating implementations on a wide range of parallel
   architectures.

   It is planned to run it on a 64 processor KSR machine.

   (1996-08-22)