Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Visual Works (hierarchy name)
5. visual works (works)
6. [visual works by form]

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication
4. Visual Works
5. visual works
6. visual works by form
7. polyptychs

Anotations

Scope note:

Paintings or carvings consisting of or mounted on three attached panels, often hinged so that the outer wings fold over the central portion; a common form for altarpieces. Also used for other works having three related images side by side.