The quality or fact of relating to or being about something; Philosophy (of a mental state, symbol, representation, etc.) the property of being about something (existent or non-existent).
Origin
Early 20th century. From about + -ness.
Definition of aboutness in US English:
aboutness
nounəˈbaʊtnəs
The quality or fact of relating to or being about something; Philosophy (of a mental state, symbol, representation, etc.) the property of being about something (existent or non-existent).