= mediumの複数形。
媒体の意の複数形は通常"media"だけれど、"mediums"も複数形であり。特に、
The itako of Aomori Prefecture are female mediums, traditionally blind, who are known for channeling the spirits of the dead to communicate with the living. They once acted as a kind of spiritual counselor, but now face an existential crisis without successors to continue their practices.
Voices from the Other Side: Aomori’s Traditional “Itako” Mediums | Nippon.com
イタコなどの「霊媒者」の場合の複数形は"mediums"。
