Definition of the Pentagon
1
: the building in Washington, D.C., that is the headquarters of the U.S. Department of Defense
2
: the leaders of the U.S. military
There was disagreement between the President and the Pentagon over the new military budget.
Learn More About the Pentagon
Statistics for the Pentagon
Look-up Popularity
Cite this Entry
“The Pentagon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/the%20Pentagon. Accessed 19 May. 2022.
Style: MLA
MLA
Chicago
APA
Merriam-Webster
Chicago
APA
Merriam-Webster
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
-
You're (Probably) Saying It Wrong
18 words even you might be mispronouncing
-
Great Big List of Beautiful & Useless Words
Along with their degrees of usefulness
-
What's the Difference?
These words shouldn't be used interchangeably
-
Words For Things You Didn't Know Have Names
When 'thingamajig' and 'thingamabob' just won't do
Ask the Editors
Word Games
-
Face Your Fears
Don't be scared to answer these questions about f...
Take the quiz
-
Figure Out These Acronyms ASAP
You don't have to be a NASA engineer to get these...
Take the quiz
-
Yearbook Superlatives Quiz
"Most Likely to Use Obscure Words"
Take the quiz
-
How Strong Is Your Vocabulary?
The faster you answer, the higher your score
Take the quiz
Share the Pentagon