Origin: Latin suffix -ary
Catenary has 3 different meanings across 1 category:
the curve theoretically assumed by a perfectly flexible and inextensible cord of uniform density and cross section hanging freely from two fixed points
The curve described by a flexible chain or a rope if it is supported at each end and is acted upon only by no other forces than a uniform gravitational force due to its own weight and variations involving additional and non-uniform forces.
Relating to a chain; like a chain.