diptychs

noun

1. 1.A writing tablet consisting of two leaves of rigid material connected by hinges and shutting together so as to protect the writing within.
2. 2.A picture or series of pictures painted on two tablets, usually connected by hinges.
3. 3.A double catalogue, containing in one part the names of living, and in the other of deceased, ecclesiastics and benefactors of the church.
4. 4.A catalogue of saints.
5. 5.Artistically-wrought tablets distributed by consuls, etc. of the later Roman Empire to commemorate their tenure of office; hence transferred to a list of magistrates