pentagon /ˈpɛntəˌgɑːn/ noun plural pentagons
plural pentagons
Learner's definition of PENTAGON
1
[count] mathematics : a flat shape that has five sides and five corners五边形;五角形 — see picture at geometry 2 the Pentagon
a : the building in Washington, D.C., that is the headquarters of the U.S. Department of Defense五角大楼(指位于华盛顿特区附近的美国国防部总部) b : the leaders of the U.S. military美国军队的领导人 — pentagonal
/pɛnˈtægənl̟/ adjective, mathematics