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 the shape or outline of a hollow cylindrical vessel; differs from "cylindrical," in that "tubular" may be used to describe objects with curved surfaces rather than straight, and tubular objects are typically quite narrow.