con·ver·gent /-ʤənt/
  (a.)趨集于一點的,會聚性的,收斂的
  con·ver·gent /-ˈvɝʤənt/ 形容詞
  會聚的,收斂的
  convergent
  收斂
  Con·ver·gent a.  tending to one point of focus; tending to approach each other; converging.
     As many rays of light, as conveniently can be let in, and made convergent.   --Boyle.
     The vast dome of its cathedral . . . directing its convergent curves to heaven.   --Hallam.
  ◄ ►
  convergent
       adj : tending to come together from different directions [ant: divergent]