A polyptych is a work of art which is divided into sections, or panels. Some definitions restrict "polyptych" to works with more than three sections: a diptych is a two-part work of art; a triptych is
Polyptych with Coronation of the Virgin and Saints by Cenni di Francesco, 1390s
Duccio di Buoninsegna, Polyptych no. 47 , 1315–1319, tempera and gold on wood, from the now lost church of the Hospital of Santa Maria della Scala in Siena, Siena, Pinacoteca Nazionale
Ghent Altarpiece Google Art Project
The Ghent Altarpiece, also called the Adoration of the Mystic Lamb, is a very large and complex 15th-century polyptych altarpiece in St Bavo's Cathedral, Ghent, Belgium. It was begun around the mid-14
Polyptych
…the other panels are called "side" panels, or if hinged, "wings". Folding forms were much more common north of the Alps. Sometimes, as evident in the Ghent Altarpiece and Isenheim Altarpiece, the hinged panels can be varied in arrangement to show different "views" or "openings" in the piece, because the wing panels…
Woodcut portrait of Hubert van Eyck, Edme de Boulonois, mid-16th century
Portrait of a Man (Self Portrait?), 1433. Jan van Eyck, National Gallery, London