catenary
Concise Oxford English Dictionary © 2008 Oxford University Press:
catenary /kəˈtiːnəri/
▶noun (pl. catenaries) a curve formed by a chain hanging freely from two points on the same horizontal level.
■ a chain forming such a curve.
▶adjective of, involving, or denoting a catenary.– origin C18: from L. catenarius ‘relating to a chain’, from catena ‘chain’.
'catenary' also found in these Oxford entries:

