Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Attributes and Properties (hierarchy name)
4. [attributes and properties by specific type]
5. form attributes
6. shape (form attribute)

Anotations

Scope note:

Having a form composed of a continuous curve, roughly oval but wider below the mid-section than in the upper; may be two- or three-dimensional. Form may be inverted, with larger dimension at the top. So-named because the form resembles the fruit of the European pear tree (Pyrus communis) and certain other species of the Pyrus genus.