volcanist Meaning, Definition & Usage

Vol"can*ist noun
Etymology
Cf. F. volcaniste, vulcaniste.
Definitions
  1. One versed in the history and phenomena of volcanoes.
  2. One who believes in the igneous, as opposed to the aqueous, origin of the rocks of the earth's crust; a vulcanist. Cf. Neptunist.

Webster 1913