How to use "medium" in a sentence

The man was aged 30, 1.70m tall, medium build, with a fair complexion and moustache

He was in his late forties, of medium height, broad-shouldered and strong

Scary stories of every kind, in every medium

A thin film of moisture covered the victim's nose and lips and chin, but this was only the harmless medium in which the toxin had been suspended

In a few seconds, the medium would evaporate too, leaving nothing unusual to arouse the initial attending physician's suspicion.

"Don't you have to be in a trance, like a medium at a seance?"