Definition of: catenary

(kat′ə·ner′ē, kə·tē′nə·rē) noun plural ·ies Math.
The curve formed by a perfectly flexible, inextensible, infinitely slender cord suspended from two points not in the same vertical line; especially, the common catenary, represented by a chain freely suspended from two fixed points.
—adjective Relating to or like a catenary or a chain: also cat·e·nar·i·an (kat′·ə·nâr′ē·ən). [<L catenarius <catena chain]