- The definition of a pentagon is a figure with five straight sides and five angles, or a building near Washington D.C. that serves as the headquarters of the Department of Defense.
- The five-sided shape of a road sign used for school advance warning signs is an example of a pentagon.
- The headquarters of the Department of Defense is an example of the Pentagon.
The Pentagon is also shaped like a pentagon.
pentagon definition by Webster's New World
Origin: Classical Latin pentagonum ; from Classical Greek pentagōnon: see penta- and amp; -gon
pentagon definition by American Heritage Dictionary
- A polygon having five sides and five interior angles.
- Pentagon A five-sided building near Washington, D.C., containing the U.S. Department of Defense and the offices of the U.S. Armed Forces. Used with the.
Origin: Late Latin pentagōnum, from Greek pentagōnon : penta-, penta- + -gōnon, -gon.
- pen·tagˈo·nal adjective
- pen·tagˈo·nal·ly adverb
pentagon - Cultural Definition
An immense five-sided building in Virginia, just outside Washington, D.C., that serves as headquarters for the Department of Defense.
- The term is often used to refer to the Department of Defense or the military: “The Pentagon agreed today to submit the modified weapons plan to the president.”
- The Pentagon was severely damaged by the September 11 attacks.
pentagon - Phrases/Idioms
pentagon - Science Definition
- pentagonal pentagonal adjective