极点 (極點) jídiǎn

1. jídiǎn noun extreme point; pole; end
   Domain: Modern Chinese 现代汉语
   Notes: (CC-CEDICT '極點'; Guoyu '極點'; Mathews 1931 '極點', p. 64)
2. jídiǎn noun the origin
   Domain: Modern Chinese 现代汉语 , Subdomain: Mathematics
   Notes: in polar coordinates (CC-CEDICT '極點')