diptych
noun /ˈdɪptɪk/
/ˈdɪptɪk/
(specialist)- a painting, especially a religious one, with two wooden panels that can be closed like a book
（尤指宗教的）对折画，双联画 词源early 17th cent.: 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’.