triptych
noun /ˈtrɪptɪk/
/ˈtrɪptɪk/
(specialist)- a picture that is painted or carved on three pieces of wood placed side by side, especially one over an altar in a churchTopics Artc2Word Originmid 18th cent. (denoting a set of three writing tablets hinged or tied together): from tri- ‘three’, on the pattern of diptych.