catenary

[kat-n-er-ee; especially Brit. kuh-tee-nuh-ree] Origin

cat·e·nar·y

[kat-n-er-ee; especially Brit. kuh-tee-nuh-ree] noun, plural cat·e·nar·ies, adjective
noun
1.
Mathematics. the curve assumed approximately by a heavy uniform cord or chain hanging freely from two points not in the same vertical line. Equation: y = kcosh(x/k).
2.
(in electric railroads) the cable, running above the track, from which the trolley wire is suspended.
adjective
3.
of, pertaining to, or resembling a catenary.
4.
of or pertaining to a chain or linked series.

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Catenary is always a great word to know.
So is lollapalooza. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.

Origin:
1780–90; < Latin catēnārius relating to a chain, equivalent to catēn(a) a chain + -ārius -ary
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Collins
World English Dictionary
catenary (kəˈtiːnərɪ)
 
n , pl -ries
1.  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
2.  the hanging cable between pylons along a railway track, from which the trolley wire is suspended
 
adj
3.  of, resembling, relating to, or constructed using a catenary or suspended chain
 
[C18: from Latin catēnārius relating to a chain]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

catenary
1788, from L. catenanus, from catena "chain" (see chain).
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica
Encyclopedia

catenary

in mathematics, a curve that describes the shape of a flexible hanging chain or cable-the name derives from the Latin catenaria ("chain"). Any freely hanging cable or string assumes this shape, also called a chainette, if the body is of uniform mass per unit of length and is acted upon solely by gravity.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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