"Submedial" Natural Recordings by Native Speakers
Submucosal: located below the mucous membrane, typically referring to tissues or structures found beneath a mucous membrane.
Submediant: in music, referring to a note or chord that has a pitch between the tonic and the mediant.
Submedia: can refer to something that is not as well-known or prominent as a major or "mainstream" media source (such as a news organization or entertainment company).