Definition of pentagon noun from the Oxford Advanced Learner's Dictionary

     

    pentagon

     noun
    noun
    BrE BrE//ˈpentəɡən//
     
    ; NAmE NAmE//ˈpentəɡɑːn//
     
     
    jump to other results
  1. 1 [countable] (geometry) a flat shape with five straight sides and five angles
  2. 2the Pentagon [singular] the building near Washington DC that is the headquarters of the US Department of Defense and the military leaders a spokesman for the Pentagon
  3. Word Origin late 16th cent.: via Latin from Greek pentagōnon, neuter (used as a noun) of pentagōnos ‘five-angled’.
See the Oxford Advanced American Dictionary entry: pentagon

Other results

All matches