Pentagon

ahd-5
  • noun. A polygon with five sides and five angles.
  • noun. A five-sided building near Washington DC, containing the US Department of Defense and the offices of the US Armed Forces. Used with the.
  • The Century Dictionary and Cyclopedia
  • noun. In geometry, a figure of five sides and five angles: if all the sides and all the angles are equal it is a regular pentagon.
  • noun. In fortification, a fort with five bastions.
  • the GNU version of the Collaborative International Dictionary of English
  • noun. A plane figure having five angles, and, consequently, five sides; any figure having five angles.
  • noun. a pentagon in which the angles are all equal, and the sides all equal.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. A polygon with five sides and five angles.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. the United States military establishment
  • noun. a five-sided polygon
  • noun. a government building with five sides that serves as the headquarters of the United States Department of Defense
  • Word Usage
    "In particular, the fact that the pentagon is exempt from inclusion on U.S. emissions makes our participation in this conference a joke."
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