An arrangement where a single item belongs to more than one category at the same time, so it can be reached by several different paths. It reflects that real content often fits neatly into more than one place.
Synonyms
- multiple parentage
- cross-listing
Related terms
- taxonomy
- faceted classification
- page hierarchy
- information architecture
- cross-reference
In plain words
- one item filed under several categories
- content that lives in more than one place
- reaching a page by different routes
Usage example
Thanks to polyhierarchy, a waterproof jacket appeared under both outerwear and hiking gear.
Don't confuse with…
- taxonomyA strict taxonomy gives each item one home; polyhierarchy deliberately lets an item sit under several parents.
Categories
- Information architecture