Volcanus
Volcanus is a term used in speculative and fictional contexts to designate volcanic settings or entities. It is not a standard scientific term for a real place. The root is Latin volcanus, meaning "of a volcano" or "volcanic," and it appears in academic Latin describing volcanic features, but as a standalone name it is rare in real-world science.
In fiction and worldbuilding, Volcanus is commonly used as the name of a volcanic planet, moon, region,
In real-world science, volcanic activity is studied under volcanology, with terms such as volcano, volcanic arc,
See also: Volcano, Volcanology, Volcanic planet, Fire deity.