ˈsubject ˌmatter BrE AmE noun [uncountable]
what is being talked about in speech or writing, or represented in art:
The movie has been rated ‘R’ due to adult subject matter.
ˈsubject ˌmatter BrE AmE noun [uncountable]
what is being talked about in speech or writing, or represented in art:
The movie has been rated ‘R’ due to adult subject matter.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012