Subject matter, in general, is anything which can be content for some theory.
Subject matter may refer to:
Patentable subject matter (or statutory subject matter), defining whether patent protection is available Subject-matter jurisdiction, determining the kinds of claims or disputes over which a court has jurisdiction Subject-matter expert, an expert in a particular area Subject matter expert Turing test, a variation of the Turing test where a computer system attempts to replicate an expert in a given field Aboutness, the concept that a text, utterance, image, or action is on or of Subject (documents), in library science
See also
Subject (disambiguation)