1. Medium as a communication channel:
* Yes, a message can be considered a "medium" if you're talking about the way the message is delivered. For example, email, text message, phone call, letter, etc. are all mediums of communication.
2. Medium as a platform:
* "Medium" is also a popular online platform for publishing articles, essays, and stories. In this context, a "message" would be the content you write and publish on Medium.
3. Medium as a spiritual entity:
* A "medium" can also refer to a person who claims to act as a conduit between the living and the dead. In this context, the message would be the communication received from the spirit world.
So, to answer your question, "a message called medium" is a bit ambiguous. To understand what you mean, I need more context. Can you tell me what kind of message you're referring to?