[1] : The Collaborative International Dictionary of English v.0.48

pentagon \pen"tagon\, n. gr. penta`gwnon; penta- see
   penta- + gwni`a angle: cf. l. pentagonium, f. pentagone.
   geom.
   a plane figure having five angles, and, consequently, five
   sides; any figure having five angles.
   1913 webster

   regular pentagon, a pentagon in which the angles are all
      equal, and the sides all equal.
      1913 webster
see also:
penta- regular pentagon 

[2] : WordNet (r) 2.0

pentagon
     n 1: a government building with five sides that serves as the
          headquarters of the united states department of defense
     2: the united states military establishment
     3: a five-sided polygon

[3] : U.S. Gazetteer (1990)

pentagon, dc
  zip codes: 20301

Pentagon >> P Words
Pentagon, definition of term: Pentagon
pentagon_pag1.html

The Pentagon: Headquarters of the United States Department of Defense
...About The Pentagon general information and history of the Pentagon. ... in touring the Pentagon should contact the Pentagon Tour Office at 703- ... ..
http://www.defenselink.mil/pubs/pentagon/, score=100, date indexed=December 29, 2005, 7:57 pm

U.S. Department of Defense Official Website - 12/29/2005 - Final Edition
...News Products. Press Articles. Press Resources. Pentagon Press Passes ... ..
http://www.defenselink.mil/, score=96, date indexed=December 29, 2005, 10:44 pm

Pentagon Renovation Program
...Pentagon Memorial. Pentagon Library & Conference Center Information ... Welcome to the Pentagon Renovation & Construction Program Office Web ... ..
http://renovation.pentagon.mil/, score=96, date indexed=December 29, 2005, 10:53 pm

... ..
http://www.pentagon.net/, score=96, date indexed=December 29, 2005, 10:41 pm

Pentagon Memorial
...Pentagon Memorial Fund, Inc. All Family Members of Pentagon Victims. ... of the Pentagon Memorial Fund, Inc.; Michael Sullivan, Pentagon ... ..
http://memorial.pentagon.mil/, score=95, date indexed=December 29, 2005, 11:23 pm

Object moved
... ..
http://www.penfed.org/, score=95, date indexed=December 29, 2005, 11:22 pm

U.S. Department of Defense Official Website - 12/29/2005 - Final Edition
...News Products. Press Articles. Press Resources. Pentagon Press Passes ... ..
http://www.pentagon.gov/, score=95, date indexed=December 29, 2005, 10:05 pm

Pentagon Library
... ..
http://www.hqda.army.mil/library/, score=95, date indexed=December 29, 2005, 6:24 pm

... ..
http://www.freedomunderground.org/memoryhole/pentagon.php, score=93, date indexed=December 29, 2005, 7:36 pm

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