catena, -ae, f. chain
Declension: Catena is a Latin noun of the first declension.
English Derivative: Catenate - to connect in a series or form into a chain
Example and Tip:
Pliny's ghost story uses the noun in the form catenas. Determine which case it could be in by running through the paradigm in your mind or by consulting the paradigm below. Note the macrons appear in this paradigm. There are no macrons in Rose William's version of Pliny's haunted house story.