Even the Wikipedia page contains information about the original Tokio research team that only has one shared author. Furthermore, 5D is the natural extension of

Even the Wikipedia page contains information about the original Tokio research team that only has one shared author. Furthermore, 5D is the natural extension of 3D, which was already used to distinguish it from traditional 2D (like, say, CDs). "Term of art" might be a subjective concept, but the article making it up or not is objective.