| a. | 1. | Relating to a chain; like a chain; |
| n. | 1. | (Geol.) The curve formed by a rope or chain of uniform density and perfect flexibility, hanging freely between two points of suspension, not in the same vertical line. |
| Noun | 1. | catenary - the curve theoretically assumed by a perfectly flexible and inextensible cord of uniform density and cross section hanging freely from two fixed points |