The headquarters of the United States of America's Department of Defense.
Other Word Forms of Pentagon
Idioms, Phrasal Verbs Related to Pentagon
- the Pentagon
Origin of Pentagon
From French pentagone or late Latin pentagonum, from Ancient Greek πεντάγωνον (pentagōnon), noun use of the neuter of the adjective πεντάγωνος (pentagōnos, “five-angled"), from πέντε (pente, “five") + -γωνος (-gōnos, “angled").
Late Latin pentagōnium from Greek pentagōnon from neuter of pentagōnos pentagonal penta- penta- -gōnos angled –gon
From American Heritage Dictionary of the English Language, 5th Edition
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