Diptych is a noun that has three different meanings. According to the Merriam-Webster Dictionary, Diptych is defined as follows:

“1) A 2-leaved hinged tablet folding together to protect writing on its waxed surfaces.

2) A picture, or series of pictures (as an altarpiece) painted or carved on two hinged tablets.

3) A work made up of two matching parts.”

Machine Brief:
Diptych= DIP/TIK