catenary /kəˈtiːnərɪ/

• 1. 

  N the curve assumed by a heavy uniform flexible cord hanging freely from two points. When symmetrical about the y-axis and intersecting it at y = a, the equation is y = a cosh x/a 悬链线

• 2. 

  ADJ of, resembling, relating to, or constructed using a catenary or suspended chain 悬链线的