Meaning of “pentagon” in the English Dictionary

"pentagon" in American English

See all translations

pentagonnoun [ C ]

us /ˈpent·əˌɡɑn/

geometry a flat, five-sided shape with five angles

Pentagonnoun [ U ]

us /ˈpent·əˌɡɑn/

the building where the US Defense Department is based, or the US Defense Department itself

(Definition of “pentagon” from the Cambridge Academic Content Dictionary © Cambridge University Press)