Pronunciation: (kat'n-er"ē; esp. Brit. ku-tē'nu-rē), [key]
—n., pl. -nar•ies,
1. Math.the curve assumed approximately by a heavy uniform cord or chain hanging freely from two points not in the same vertical line. Equation: y = k cosh(x/k).
2. (in electric railroads) the cable, running above the track, from which the trolley wire is suspended.
1. of, pertaining to, or resembling a catenary.
2. of or pertaining to a chain or linked series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.