D defs.my
Entry 4 senses Webster, 1913

operational

· IPA /ˌɑ.pəˈɹeɪ.ʃə.nəl/
01 adj. of or pertaining to operations; as, operational procedure.
  1. 1.
    of or pertaining to operations; as, operational procedure.
  2. 2.
    Fit or ready for service; available and in working condition; as, an operational aircraft. Opposite of out-of-service.
  3. 3.
    of or intended for or involved in military operations. Opposite of nonoperational.(Mil.)
  4. 4.
    In force; not expired or annulled; -- of rules or laws.
    “de facto apartheid still operational even in the ‘new’ African nations” — Leslie Marmon Silko