Answer: catenary

AnswerCrossword Clue
CATENARYShape described by the [circled letters]
CATENARYLike a chain.
CATENARYCurvature of a suspended cable
catenarythe 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)
catenaryof, pertaining to, or resembling a catenary
catenarya mathematical curve
catenary(in electric railroads) the cable, running above the track, from which the trolley wire is suspended
catenaryof or pertaining to a chain or linked series