顶点 (頂點) dǐngdiǎn

1. dǐngdiǎn noun summit; peak; apex; top
   Domain: Modern Chinese 现代汉语
   Notes: (CC-CEDICT '頂點'; Guoyu '頂點' 1)
2. dǐngdiǎn noun vertex
   Domain: Modern Chinese 现代汉语
   Notes: Vertex of a triangle in geometry (CC-CEDICT '頂點'; Guoyu '頂點' 2)