Relating to a chain; like a chain. / Relating to a catena.

(geometry) The curve described by a flexible chain or a rope if it is supported at each end and is acted upon by no other forces than a uniform gravitational force due to its own weight and variations involving additional and non-uniform forces.

(biochemistry) Destructive metabolism, usually including the release of energy and breakdown of materials.

A reformation technique used to "strip" gasoline of impurities, improve octane rating etc.

(idiomatic) A difficult situation from which there is no escape because it involves mutually conflicting or dependent conditions.

(chemistry) The increase of the rate of a chemical reaction, induced by a catalyst.

(transitive) To assign a category; to divide into classes.

(informal) Infectious, contagious. / Captivating; alluring; catchy.

The action of the verb catch.

present participle of catch