hasDefinedTerm

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.

Thing > Property > hasPart > hasDefinedTerm

A Defined Term contained in this term set.
Values expected to be one of these types
DefinedTerm
Used on these types
DefinedTermSet
Sub-properties
hasCategoryCode
Super-properties
hasPart

Source

https://github.com/schemaorg/schemaorg/issues/894