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Catenanes are molecules in which two or more molecular rings are entangled like the links of a chain2; indeed, their name derives from catena, the Latin word for chain.

They are looking for chains of depressions known as catenae.

One of the persons present having changed places, Eusapia utters complaints: "La catena! la catena!"

St. Matthew in vermilion with catena in black.

The Greek original of most of the first sentence is preserved in a catena on Deuteronomy, Cod.