Catenary
WordNet
noun
(1) The curve theoretically assumed by a perfectly flexible and inextensible cord of uniform density and cross section hanging freely from two fixed points
WiktionaryText
Etymology
From , in turn from . Attested since 1788.
Noun
- 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.
- The curve of an anchor cable from the seabed to the vessel; it should be horizontal at the anchor so as to bury the flukes.
- A system of overhead power lines that provide trains, etc, with electricity, having a straight conductor wire and a bowed suspension cable.