n. [ L. diptycha, pl., fr. Gr. &unr_; folded, doubled; di- = di`s- twice + &unr_; to fold, double up. ] 1. Anything consisting of two leaves. Especially: (a) (Roman Antiq.) A writing tablet consisting of two leaves of rigid material connected by hinges and shutting together so as to protect the writing within. (b) A picture or series of pictures painted on two tablets connected by hinges. See Triptych. [ 1913 Webster ]

2. A double catalogue, containing in one part the names of living, and in the other of deceased, ecclesiastics and benefactors of the church; a catalogue of saints. [ 1913 Webster ]