Definitions for "Catena"
A chain or series of things connected with each other.
Catenae are comments extracted from ecclesiastical writers. The comments are written into the margin with the author's name abbreviated and a system of symbols matching the marginal comment to the relevant place in the text.
a chain of connected ideas or passages or objects so arranged that each member is closely related to the preceding and following members (especially a series of patristic comments elucidating Christian dogma)