cat·e·nar·y (kătn-ĕr′ē, kə-tēnə-rē)
n. pl. cat·e·nar·ies
1. The curve formed by a perfectly flexible, uniformly dense, and inextensible cable suspended from its endpoints. It is identical to the graph of a hyperbolic cosine.
2. Something having the general shape of this curve.
[New Latin catēnāria, from Latin, feminine of catēnārius, relating to a chain, from catēna, chain.]
(click for a larger image)catenary
The equation for this catenary with a as the y-intercept is y = a/2 (ex/a + e-x/a).
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