Triptych (noun)

1. A triptych is a work of art that is divided into three sections, typically hinged together so that they can be folded shut or displayed open.
2. A set of three associated artistic, literary, or musical works intended to be appreciated together.

Origin:

Late 16th century: via latin from greek triptychon, from tri- "three" + ptyche "fold".

Examples:

1. The triptych depicted the birth, death, and resurrection of Jesus Christ.
2. The museum was showcasing an ancient triptych of three wooden panels, each panel adorned with intricate carvings.
3. The triptych is considered one of the greatest masterpieces of religious art in the world.
4. The triptych formed part of a major retrospective of the artist's work.
5. The triptych was created using a combination of oil and tempera on panel, with gold leaf highlights.