triptych

A work, such as an altarpiece, consisting of three painted or carved panels that are hinged together.

A hinged writing tablet consisting of three leaves, used in ancient Rome.

A picture, carving, or other representation in three compartments side by side: most frequently used for an altar-piece.

A series of writing-tablets, three in number, hinged or tied together.

A writing tablet in three parts, two of which fold over on the middle part.

A picture or altarpiece in three compartments.

A picture or series of pictures painted on three tablets connected by hinges.

A set of three se-tenant postage stamps that form a composite picture.

art consisting of a painting or carving (especially an altarpiece) on three panels (usually hinged together)