diptych

 
Pronunciation: /ˈdɪptɪk/

noun

  • 1a painting, especially an altarpiece, on two hinged wooden panels which may be closed like a book.
  • 2an ancient writing tablet consisting of two hinged leaves with waxed inner sides.

Origin:

early 17th century: via late Latin from late Greek diptukha 'pair of writing tablets', neuter plural of Greek diptukhos 'folded in two', from di- 'twice' + ptukhē 'a fold'