Definition of "reconnaissance"

reconnaissance

/ɹɪˈkɒnəsəns/

noun
countable and uncountable, plural reconnaissances
1. The act of scouting or exploring (especially military or medical) to gain information.
  Quotations
  The third member, Sergeant Pieter Rousseau, had been with the back-up teams at the Hub; he was an expert on space reconnaissance instrumentation, but on this trip he would have to depend on his own eyes and a small portable telescope.
  1973, Arthur C. Clarke, Rendezvous with Rama